Gnome not handling 3 Monitors & JITSI screen share

[Alan Hill]

Summary
Gnome fails to support browser when using 3 monitors when JITSI screen share is invoked.
Windows 10 works fine on same computer

Details
Using Ubuntu 18.4.04 or 20.04 with Gnome & 3 monitors using either Chrome, Firefox or Chromium browsers when an attempt is made to share the screen mode selection flashes such that it is difficult to see, then the browser disappears (stops or crashes). The Ubuntu program appears to keep running sending a camera picture the JITSI server. If the browser is restarted and logged on to the JITSI server two instances of the camera picture appear.

If two monitors only are connected then the system works flawlessly

Computer:-
Asus Z87-C motherboard, CPU Intel(R) Core(TM) i5-4570T CPU @ 2.90GHz(variable clock rate 800-3600MHz), memory 8GB 1333MHz DDR3
monitors Dell 24” 1920x1080 VGA connection
  Asus 24” 1920x1080 sub- D connection
  Bauhn 26”1920x1080 HDMI
The motherboard video is being used. It is specified to handle 3 Monitors at 1920x1080 pixels
The computer runs Windows 10 or Ubuntu 20.04 It has a 2.5’hard disk front loading cassette. The programs are loaded on 250 and 120GB SSDs which can be interchanged easily

A copyof the terminal is as follows:-
alan@Z87CU20:~$ xprop WM_CLASS
WM_CLASS(STRING) = "google-chrome", "Google-chrome"
alan@Z87CU20:~$ xprop WM_CLASS
WM_CLASS(STRING) = "apport-gtk", "Apport-gtk"
alan@Z87CU20:~$

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/1883464/+editstatus and add the package name in the text box next to the word Package.

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