@ciara IT BREAKS SO MUCH. If you're using OpenGL, there are obviously things broken (like vsync, or maybe a window that doesn't seem to render anything). Most things can be fixed (and most will continue to work if you build with Xcode 9 instead of 10), but expect things to break when you upgrade.
There are some other recent reports from Mojave users but I'm not fully sure which ones are actual Mojave-related regressions, and which are just normal bugs.
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