URL on the bottom left that won't go away

[satchow]

I'm using the web player in Firefox 104.0 (64-bit) Windows 11. In fullscreen it shows the URL of my DVR computer and it won't go away on it's own. I can get it to go away if I try random stuff like dragging the window to another monitor or repeatedly un-fullscreening it but nothing I can really reproduce that well. Any help would be appreciated! Attached is a crop of the corner of my monitor with my desktop name blacked out.

[racameron]

That's coming from Firefox, and not something Channels controls.

[satchow]

It's not Channels directly, but what is it doing that YouTube, Plex, etc isn't? Because they don't do that when they're fullscreen.