TBH I'd take QT app over any electron/web app... it still looks more consistent and matches the OS. Heck, even Java Swing (IDEA) looks better and feels more native than any electron crap.
Not sure... It's mostly due to used L&F. You have FlatLaf (inspired by IdeaUI). Swing is surprisingly solid platform (though it has it's quirks and sadly it's development virtually stopped years ago)
