Here is a potential bug that I have encountered several times already:
When using the material panel to shade an object inside of the current Rhino WIP (8.0.22166.04306, 2022-06-15, MacOS 12.4, M1 Max), sometimes the properties of the material do not show.
This can be solved by restarting the program, but sometimes - like today - it does not show even after restarting the program.
I have not found any similar topic in the forum but please hint at if there is one. Would be happy if anybody knows a solution to this.