Bug#887835: qt5ct just *doesn't* work - The QT_QPA_PLATFORMTHEME environment variable is not set correctly

[Boyuan Yang <073plan@gmail.com>]

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