TLF Textfields are now depreciated and not included in Adobe's Flash CC, they also throw Sandbox security errors ( 2070 ) and stop rendering in SWFRenderer.
However, we have added functionality that will hopefully enable you to continue rendering on security sandbox violations caused by the TLF component - this should help you export TLF enabled content ( and other content that throws this error ). To enable this feature either use the CLI switch, see documentation for your platform:
Alternatively go to the "Global Settings" panel, and enable the option to "Continue rendering on security sandbox violation errors".