Last Updated on: 28th April 2022, 01:14 pm
The QT 5.7.0 doesn’t support GTK theming, so after upgrade Qt related packages, the Qt based applications look… not really nice on GTK based desktops.
How to fix it:
sudo apt update
sudo apt install qt5-style-plugins
sudo nano /etc/environment
and past into the file:
That’s all. The first screen shows a Qt5 based application before, the second one after.