Fatih19 I installed apps mentioned above and there's anomaly between installing from software center and flatpak. All of them have weird UI when they're installed from software center. It looks like something from Windows 95-98. Any reasons for this?
Fatih19 But the problem isn't with flatpak. The apps installed from flatpaks works perfectly fine. The problem is the apps installed from the software center.
kyrios Perhaps you could post screenshots? Also which desktop enviroments is used (Budgie, Plasma,...) ?
Staudey Are you sure you don't have this the wrong way around? GIMP looks perfectly fine (adopting the system theme) when installed from the Software Center. In fact, the weird theming is one of the big issues people have with Flatpak/Snap/etc.
Fatih19 I set both of theme to use the system theme in the preferences. The first one is from the software center while the second one is from the flatpak.
JoshStrobl Fatih19 That doesn't look like a standard GTK theme at all. You sure the theme you're using supports the latest GTK3 release?
Fatih19 This is the theme I use: https://www.gnome-look.org/p/1275087/ I use the Mojave-Light After delving deeper into it, I've found that it worked with this theme that is not only similar but also created by the same person: https://www.gnome-look.org/p/1013741/
