since installing 2021, I am having problems in 2020 Revit with Enscape. I know Enscape has not released for 2021, but this is the only difference I can think of on my machine, other than an Adobe update.
I have lost legibility (the menu does not show in Revit for Enscape only), and there are some UVW issues for differing materials both during preview and render. Attached you will see a screen shot of the menu and both a preview and render shot of the project. Note the patterning via material on the slab is no longer square with the project, although the material created has no rotation embedded in the definition.