[gok]

> It's a native application designed to run on macOS.

It's a Qt app that happens to compile and run on macOS.

If you want a few really obvious example of how the UI works wrong, try scrolling any of the lists with a trackpad. It won't bounce properly. It also won't autohide the scrolling indicator correctly. You need to repurpose cmd+F, ehm, ok, but why did you remove cmd+W to close a window entirely?

It get much worse when you get into accessibility. Turn on keyboard navigation in the system (in System Preferences -> Keyboard -> "Use keyboard navigation…"). Now open a dialog box, like, say, the Add Image source sheet. Hit tab. It won't actually move between the widgets properly; it cycles between the radio buttons, text fields, and checkbox, but can't highlight the push buttons. This is catastrophic for people who depend on this functionality.