KDE's color theme is no longer applied to some apps, like OpenOffice and Gpg's pinentry dialog. GTK apps do respect the color theme.

Is there any tweak that can be manually applied to some config files to restore the previous color behavior?

Using :

Operating System: Arch Linux
KDE Plasma Version: 5.20.4
KDE Frameworks Version: 5.77.0
Qt Version: 5.15.2
Kernel Version: 5.10.0-rc7-git
OS Type: 64-bit
Processors: 8 × AMD Ryzen 5 2500U with Radeon Vega Mobile Gfx
Memory: 14.7 GiB of RAM
Graphics Processor: AMD Radeon™ Vega 8 Graphics

Thanks.

One one machine, selecting Breeze-Dark with gtk-chtheme does the trick, but must be done again after login.
On another machine, the trick does not work at all.

Still no idea for a reliable fix ?