@vslavik Glad it's not just me. The apps where it’s working for me are Revisual, Batfi, Kaleidoscope, and Name Changer. I asked Revisual’s dev how he implemented it, and he said he just used .tint(). At this point, my best guess is that it’s a bug that only shows up in certain hardware/software environments. I haven’t received any feedback on my bug report yet, but hopefully Apple engineers are aware of it and looking into it.

To clarify: .tint() used to work with .toggleStyle(.switch) but it no longer does. It still works with .toggleStyle(.checkbox) and .toggleStyle(.button). I suppose it could be that the new Liquid Glass components are not as customizable on macOS, but I just saw an app that uses them with a custom color so it looks possible.

Toggles did respect the .tint modifier on macOS prior to Tahoe. I'm not getting any sort of compiler error, so I'm assuming it's a bug. I did file a report through FeedbackAssistant. #FB20380817