This started happening since the new explorer UI. What do I do?
This used to happen to me, I uninstalled Roblox Studio and deleted the folders then reinstalled Roblox Studio.
what folders? auto recovery places or?
No, Uninstall Roblox, press Win + R and search C:\Users\<NAME>\AppData\Local\, find and delete the Roblox. Then, go to C:\Program Files (x86), locate and delete the Roblox folder.