Yes, though qbittorrent at least has moved to it / supports it, which is how I found out about it. After an update it started with a completely different theme,

Yes, though qbittorrent at least has moved to it / supports it, which is how I found out about it. After an update it started with a completely different theme, and eventually I realized it had switched to Qt6 and I needed to install the Qt6 version of the theme.