Control: reopen -1 No, I can confirm that this bug is not fixed at all.
Here's how to reproduce it: 1. Completely remove qt5ct from system (if installed before) 2. Reboot, possibly enter a GNOME-based system (like GNOME Shell) 3. Ensure that "echo $QT_QPA_PLATFORMTHEME" will return null 4. apt install qt5ct 5. **immediately** type "qt5ct" in a previously-opened terminal emulator Okay, qt5ct will now crash since $QT_QPA_PLATFORMTHEME is not set. However, a reboot of system will fix the problem. I think this should be considered as a bug. Regards, Boyuan Yang