u/kibomo

I've been using niri for quite a while and its been a pleasant experience.
Until recently I have not had any issues.

Recently Niri has started to render these thin black lines at the bottom of the monitor.
They will occassionaly come and go, sometimes a few lines and sometimes many.

Do you know what would be causing this?

Edit:

For clarity, they don't show up in screenshots or in grub boot menu.