Can't view window buttons of natives apps in Xfce

[LynxUtz]

I can't view the buttons normally in the top-right corner in native Xfce apps, such as Settings with a Sweet theme.

[LynxUtz]

Platform:

• OS: Debian GNU/Linux 11 (bullseye) x86_64
• Kernel: 5.10.0-21-amd64
• Resolution: 1366x768
• DE: Xfce 4.16
• WM: Xfwm4
• WM Theme: Juno-standard-buttons-v40
• Theme: Sweet-Dark-v40 [GTK2], Adwaita-dark [GTK3]
• Icons: Sweet-Rainbow [GTK2], nuoveXT2 [GTK3]

[CyberNomadX]

I have found this to also be an issue with the native radial menu buttons. They are not showing.

[EliverLara]

it seems to be related to https://github.com/EliverLara/Nordic/issues/168#issuecomment-1024449370