I don't know where to start. When I am selecting any texture in the editor I get: and texture preview not showing. Any selected material looks like this (with variations) in the preview: Editor crashes on closing. Prefabs loose their overrides when CTRL+C and CTRL+V them in the hierarchy (while CTRL+D works fine). Editor sometimes stuck on opening. It is only a fraction of all problems I have in 2020.3 version. 2020.2 and and especially 2020.1 were much much stable and production ready. Every time someone will tell you to use only LTS versions of Unity, because THEY ARE STABLE tell them they can go screw. I am sorry, but this is impossible. Any good company would have fired the whole QA department after this. And stopped any further development until developers will learn to do simple local verification. The saddest thing is that I see some of this bugs in the tracker. For example bug with exceptions on selecting texture is there from February 25. For some reason UT fixes bugs for TECH stream first (that should not be usable in the production). And after a half of the year we will finally see the fixes propagate to the STABLE and PRODUCTION READY version. It is so frustrating.