Yes it’s been discussed on several threads (e.g. Intersect Faces and other Menu Items Greyed Out - #54 by RLGL). The developers are aware of it and it should be fixed in the next update.
Like you, I find it very frustrating so i hope it gets fixed soon. I’m working long days with SketchUp currently and it happens at least 1-2 times per hour which is really annoying. I now have one additional blank SketchUp session open all the time so I can close and reopen a bit faster.