Sketchup lagging to the point tools do not work

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What you describe are some of the minor symptoms you get when you have done what I talk about in this post:

Returning to SketchUp stops inferencing from working, can't switch tools, crash soon after

@TheOnlyAaron asked me if a particular thing he was seeing was a known problem in 2024. It wasn’t a known problem, but I soon worked out what was really going on. The real issue would affect all versions of SketchUp that are running on a macOS later than Monterey. I will explain… Here are steps you can do in macOS Monterey, and get away with it: In any version of SketchUp, right-click somewhere in the document, to see a contextual menu. Single-click on the window of a background application. …