[Linux ]Lazarus IDE - Known problems under KDE 6 Dark Breeze?

[shadow]

Hello,

I am new to GNU/Linux and KDE 6. Are there any known display problems under KDE? When I start Lazarus under Cinnamon (dark mode), everything looks quite reasonable and above all recognizable. Under KDE you usually can't see the font (white font on white background) and the buttons are oversized. All in all, the IDE looks quite strange under KDE. In light mode you can see the labels again, but the display still looks strange.

I would just like to ask if similar experiences have been made. I will continue to work under Cinnamon as an alternative, as light-colored surfaces are a pain.

First screenshot is under Cinnamon. The second one is from KDE.

Edit: I guess this topic should move to Linux. Sorry.

[Leledumbo]

I don't use stable version but fixes shouldn't be different much from stable. What could be different is the backend toolkit, attached is my gtk2 Lazarus under the same KDE Plasma 6 Breeze Dark theme. Note that I'm using Manjaro Linux which is a rolling release, so there's a chance there's a fix at KDE Plasma level, too.

[shadow]

Guess I should just wait until it'll be fixed in the near future, so I don't have to tinker around it.
Thank you for your helpful response!

[Psacla_63]

Under KDE you usually can't see the font (white font on white background) and the buttons are oversized. All in all, the IDE looks quite strange under KDE. In light mode you can see the labels again, but the display still looks strange.

I have the same problem on Fedora 42 KDE.
Under XFCE, Gnome, Cinnamon, no problem.
I tried Lazarus under some other more recent KDE distros (Neon, Kubuntu, Mageia, Manjaro, MX) without this problem.
I tried to install KDE on Fedora Worstation edition (Gnome)... same problem.
I tried to install some stable dark themes for Gtk, Qt and Plasma,... problem is still here. I suspect that coud be a problem with Plasma 6 + Wayland
The dark mode of KDE has no problem under other soft. No problem on old GTK interface like the one of GNATstudio or Dia or LibreCAD.

NOTE:
on Fedora scientific KDE version 39, Lazarus ignores the dark theme. So on version 42 its a little bit better, but pretty unusable.
I tried to use Wayland and X11 on verion 39: no differences.

So I thought that problem origin is Fedora and not Lazarus, but it seems that is more complicated.
I think that the Manjaro and Arch teams may have an explanation because apparently they have compiled Plasma with some options.

For now the only 2 options I found is
- use Fedora with XFCE.
- use Fedora KDE with ligth theme.