GTK3 Applications glitching on KDE Plasma 5

Hi Guys, I’ve just installed Tumbleweed KDE and was trying to use the Lollypop music player (which uses GTK3) but the windows looks glitched:

http://imgur.com/fJP1hkR (Can’t post the screenshot for some reason)

As you can see the borders are bigger than they are supposed to be and look flat, it looks even worse when i try to apply different GTK3 themes, this only seems to happen with GTK3 applications. I’ve been using Gnome ever since I started using Linux so I don’t know if that’s a misconfiguration or a bug.

The problem there is the gnome people who changed the way themes work, that’s why there is no official breeze for gtk
You can try this breeze theme for gtk2 and gtk3
https://github.com/dirruk1/gnome-breeze
or install and use oxygen-gtk3 for gtk3 applications.
personally I haven’t yet tested breeze for gtk and the documentation in the above git is a bit vague I’m not quite sure where those files should go.

by vague I mean the fact that they say that the files should go in the .themes folder in your home but I can’t seam to find that folder (in the /home root), but I haven’t searched that much.
Maybe if not present that folder should be created?

Hi, I did try to use the theme you linked, but it didn’t solve my problem, the borders are still bigger than they should be: Imgur: The magic of the Internet

Isn’t there a QtCurve version for GTK3? I can find only qtcurve-gtk2 and qtcurve-qt5 on the Tumbleweed repositories

my nautilus looks even stranger, you don’t seam to be using the breeze icon theme?

Isn’t there a QtCurve version for GTK3? I can find only qtcurve-gtk2 and qtcurve-qt5 on the Tumbleweed repositories

AFAIK there is no qtcurve for gtk3
https://software.opensuse.org/search?utf8=✓&q=qtcurve

I’m almost sure it has something to do with the shadow rendering, although I have no idea how to fix it. Probably something related to the Compositor, since I noticed that GTK3 applications sometimes glitch even in Gnome Shell, my only option for now is to avoid GTK3 applications since GTK2 works fine