On: OBS Studio 26.0

[Polylactic_acid]

Discord and Peek are able to capture the screen fine.

[ben-schaaf → Polylactic_acid]

The whole design behind Peek is that you have a transparent window that shows you what is being recorded and you can interact with the window behind it to record something useful. Passing through events to the window behind it only works on X11 (or XWayland).

[l3s2d → Polylactic_acid]

Are you sure you can share Wayland windows? To my knowledge screen sharing support for Electron apps is experimental or hasn't landed yet.

Xwayland windows (most games and Discord itself would fall into this category) can be shared.