I have more information about this. It seems that the number of texture coordinates does not match the number of points for certain polygons. We had issues in our CityGML reader because of this.
This is a list of polygon ids generated from our reader where the number of texture coordinates does not match the number of points for Berlin-3D/Charlottenburg-Wilmersdorf dataset.
( 110.833s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (3) does not match point count (5): GEOM_5870148_0_
( 110.840s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (6) does not match point count (8): GEOM_5870153_0_
( 110.850s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (8) does not match point count (9): GEOM_5870170_0_
( 110.854s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (3) does not match point count (4): GEOM_5870166_0_
( 110.855s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_5870164_0_
( 110.859s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (6) does not match point count (7): GEOM_5870169_0_
( 141.389s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): UUID_1b35b7c0-2bad-4d12-a7a6-560c6a4243e4_0_
( 141.391s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (6): UUID_a1944157-135a-4120-badf-d7c3fd2efeb8_0_
( 141.397s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (6) does not match point count (7): UUID_aa9fcd6e-2b78-4a12-b9c3-0bfc9eb78e5a_0_
( 142.744s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (8) does not match point count (9): UUID_483ff77c-640b-4b5a-8d4c-2738eb7bac66_0_
( 142.745s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (6) does not match point count (7): UUID_37bf97a7-0394-465c-ba85-0ae048fec0a8_0_
( 143.794s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (6): UUID_a9e5a3ef-0fc2-4444-a951-b945448c82cb_0_
( 143.797s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (6) does not match point count (7): UUID_b4c2cd3e-2ce3-48fb-9255-bee1a3daeb37_0_
( 143.798s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (6) does not match point count (7): UUID_1055542f-15df-4562-988f-97ece2e7dcf3_0_
( 173.548s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (5) does not match point count (6): UUID_1b3b0661-c155-4890-8f86-240106d0082c_0_
( 173.561s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (8) does not match point count (9): UUID_9f3f50e0-7c2e-4f4a-b04d-7c9d2f468aa5_0_
( 173.563s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (3) does not match point count (4): UUID_37cb6c41-8518-44cc-b756-567a74d5b00f_0_
( 173.564s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (6): UUID_d85fbe65-aa2d-4595-8163-92c40e3bbedc_0_
( 173.565s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): UUID_5f82c3c6-b35e-496b-9a1e-ef7ac85fb46e_0_
( 197.719s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (6) does not match point count (7): UUID_c58aedaa-af1a-4bf7-bb51-d7282b04c801_0_
( 197.724s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (6) does not match point count (7): UUID_32f421f5-21fa-426e-90a9-9278a6a6ab3e_0_
( 207.728s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (7) does not match point count (8): GEOM_5446613_0_
( 215.436s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (6): GEOM_5627657_0_
( 215.442s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (6): GEOM_5627656_0_
( 244.779s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (6) does not match point count (7): GEOM_5486975_0_
( 244.784s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (6) does not match point count (7): GEOM_5486974_0_
( 284.066s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (6): GEOM_5633444_0_
( 284.077s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (6): GEOM_5633459_0_
( 284.080s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (6): GEOM_5633453_0_
( 284.086s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (6): GEOM_5633466_0_
( 286.027s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (6) does not match point count (7): GEOM_5822063_0_
( 286.042s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (7) does not match point count (8): GEOM_5822064_0_
( 309.842s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_5636557_0_
( 309.845s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_5636559_0_
( 310.273s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_5636111_0_
( 310.366s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_5636103_0_
( 310.467s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_5636565_0_
( 310.469s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_5636105_0_
( 310.472s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_5636563_0_
( 310.719s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_5636109_0_
( 344.088s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (8) does not match point count (9): GEOM_5821910_0_
( 344.096s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (8) does not match point count (9): GEOM_5821911_0_
( 346.640s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (10) does not match point count (11): GEOM_5824697_0_
( 413.371s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_6065559_0_
( 413.405s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_6065553_0_
( 413.411s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_6065554_0_
( 413.416s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_6065550_0_
( 413.420s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (14) does not match point count (16): GEOM_6065572_0_
( 413.426s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_6065547_0_
( 413.499s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (5) does not match point count (6): GEOM_6065676_0_
( 413.513s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (5) does not match point count (6): GEOM_6065675_0_
( 413.541s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (9) does not match point count (11): GEOM_6065684_0_
( 413.543s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (5) does not match point count (6): GEOM_6065683_0_
( 433.195s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (6): GEOM_6089652_0_
( 433.202s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (3) does not match point count (5): GEOM_6089658_0_
( 433.215s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_6089678_0_
( 433.222s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_6089671_0_
( 433.708s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (3) does not match point count (4): GEOM_6358962_0_
( 433.710s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (3) does not match point count (4): GEOM_6358961_0_
( 433.717s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (9) does not match point count (11): GEOM_6358984_0_
( 438.407s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (3) does not match point count (4): GEOM_6070713_0_
( 438.428s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_6070732_0_
( 463.903s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_6633144_0_
( 463.913s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_6633200_0_
( 492.033s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_6367132_0_
( 492.035s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_6367134_0_
( 492.046s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_6367129_0_
( 492.049s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (3) does not match point count (4): GEOM_6367128_0_
( 492.069s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (3) does not match point count (4): GEOM_6369170_0_
( 492.846s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_6370830_0_
( 492.848s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (3) does not match point count (4): GEOM_6370826_0_
( 492.858s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_6370816_0_
( 492.864s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (3) does not match point count (4): GEOM_6370822_0_
( 492.874s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (5) does not match point count (6): GEOM_6370839_0_
( 492.875s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (6) does not match point count (8): GEOM_6370838_0_
( 492.876s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (5) does not match point count (6): GEOM_6370837_0_
( 524.937s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (3) does not match point count (4): GEOM_6666675_0_
( 524.954s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_6666691_0_
( 525.079s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (7) does not match point count (8): GEOM_6658477_0_
( 525.082s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (5) does not match point count (6): GEOM_6658473_0_
( 525.096s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (3) does not match point count (4): GEOM_6658465_0_
( 525.140s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_6630075_0_
( 525.143s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_6630074_0_
( 525.239s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (6): GEOM_6328581_0_
( 525.242s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_6328584_0_
( 525.257s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_6328580_0_
( 525.264s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (3) does not match point count (4): GEOM_6666609_0_
( 525.266s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (5): GEOM_6666610_0_
( 525.271s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (3) does not match point count (4): GEOM_6666618_0_
( 525.272s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (3) does not match point count (4): GEOM_6666619_0_
( 525.285s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (7) does not match point count (8): GEOM_6666641_0_
( 525.619s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (6) does not match point count (7): GEOM_6043847_0_
( 525.623s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (6) does not match point count (7): GEOM_6043846_0_
( 526.066s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (5) does not match point count (6): GEOM_6660034_0_
( 526.070s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (3) does not match point count (4): GEOM_6660035_0_
( 527.546s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (6): GEOM_6077859_0_
( 527.570s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (6): GEOM_6077839_0_
( 527.577s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (4) does not match point count (6): GEOM_6077841_0_
( 528.738s) [paraview ] vtkCityGMLReader.cxx:820 WARN| vtkCityGMLReader (0x55ebb214dc90): Tcoords count (5) does not match point count (6): GEOM_5644749_0_