Created attachment 862671 [details]
Screenshot showing indicator window showing the error

Firefox 106.0.3 is incapable of rendering the XHTML file that defines the look
of the WebRTC indicator (that small window that spawns when you join a
video/audio conference).

Instead of the indicator being rendered inside the window, Firefox is currently
showing the following error:
    XML Parsing Error: no root element found
    Location: chrome://browser/content/webrtcLegacyIndicator.xhtml
    Line Number 1, Column 1:

    ^

this behavior can also be replicated when opening
chrome://browser/content/webrtcLegacyIndicator.xhtml in a new tab.

This is happening on Tumbleweed 20221103 with MozillaFirefox-106.0.3-1.1.x86_64