On Wed, Mar 30, 2022 at 11:26:45AM +0200, Jakub Alba wrote: > Package: firefox-esr > Version: 91.7.0esr-1~deb11u1 > Severity: important > X-Debbugs-Cc: t...@security.debian.org > > Dear Maintainer, > > * What led up to the situation? Last 'apt upgrade' > * What exactly did you do (or not do) that was effective (or > ineffective)? I joined a Zoom call in Firefox private window. > * What was the outcome of this action? In the top left corner of my screen > a > borderless (and titlebarless) window showed with the text: > XML Parsing Error: no root element found > Location: chrome://browser/content/webrtcLegacyIndicator.xhtml > * What outcome did you expect instead? No window with error. > > This is not a regression specifically in Firefox itself. However, it shows > up in Firefox. xdotool showed that this error window belonged to a firefox-esr > process. This problem did not occur prior to last 'apt upgrade'. I've uploaded > the /var/log/apt/history.log entry for this update here: > > <https://paste.debian.net/1236105/> > > firefox-esr is not among the packages which were updated, so I suspect the > regression was triggered by a change in libxml2, although I'm not certain. > > Screenshot of the window with error message can be seen here: > > <https://imgur.com/a/1kAtSMy> > > The window is "sticky", in the sense that it shows up on all workspaces and > covers all windows, including the active one (I'm using KDE Plasma). This > prevents the user from clicking on things displayed in this area, e.g., in my > case, entries of the "start menu" after pressing <Win>/<Super> or tabs in > Firefox when using the Tree Style Tab extension. Thus I set the severity to > 'important'. > > The window went away after leaving the Zoom meeting (before closing Firefox).
This sounds like /usr/lib/firefox-esr/browser/omni.ja might be corrupted. Try quitting firefox, reinstalling, and running it again. Mike
