OLD World Editor Black Screen

After a recent update in the old world editor, I get a black screen while editing the grid of roads, rivers and roads. In other modes, everything works great!

What I have tried:
1) Clear cache;
2) Check files;
3) Run the game in safe mode;
4) Remove all mods.

Unfortunately, nothing helped.



I would also like to ask how to unpin windows in the new world editor?



My PC:
- CPU: R5 2600;
- RAM: 16 Gb;
- MB: ASUS B350m-k;
- GPU: RTX 2060 Super;
- SSD: 120 Gb;
- HDD: 1000 Gb.

The game is installed on disk D (HDD), there is also a folder with files (where mods are installed).

Sorry for my English, I used Google Translator.

PS: The developers are already aware of the problem. They answered my email.