I shipped a commercial app on Qt in the early 00s. The Mac port just never nailed the finer UI details to the same standard as Qt/Windows and Qt/Linux. Qt's cus

I shipped a commercial app on Qt in the early 00s. The Mac port just never nailed the finer UI details to the same standard as Qt/Windows and Qt/Linux. Qt's customers ended up being the embedded market and phone vendors, I don't think their Mac port was ever adequately resourced. I'm happy Qt/Mac exists, it made our Mac port commercially viable, and a couple days of polishing work would make the UI "good enough". If we'd done continuous deployment it would have been annoying.