Stanislav, thank you for your message and great to hear that you are using https://www.map.army.
We could reproduce your issue and did release a bug fix this afternoon. The current fix is temporary and not final. However, you should be able to work in 3D mode again using the direction modifier (Modifier Q) for military symbols.
Please do not hesitate to contact us should you have further questions on https://www.map.army.
Best Regards
Martin from the map.army team