At lease for the function that trigger by hoving maximun button. I believe windows do expose this api, firefox has this enabled for years even they draw the whole screen include icons using xul. And electron apps in native resize button mode also use actual windows resize button (Or fake one created by electron itself?) that has this function enabled. It's just some million-dollor company that are too dumb to support it properly (Or probably PM pushed it back because no user requires it?)