Totem plays video scaled down on HiDPI screen on Wayland with multiple monitors at different fractional scaling

[Aaron Whitehouse]

I am using Ubuntu Focal Fossa with Wayland and two screens.
Display 1 is a 3840 x 2160 screen at 200% scaling
Display 2 is a 1920x1200 at 100% scaling

Fractional Scaling is on. Display 2 is my Primary Display.

When I play a video on Display 2, everything works as expected. When I play a video on Display 1 (whether I drag it there or it is there all along) then it plays taking up only the top-left corner of the window.

May be related to:
https://bugzilla.redhat.com/show_bug.cgi?id=1529008
https://gitlab.gnome.org/GNOME/totem/-/issues/271
https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/252

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: totem 3.34.1-2ubuntu2
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.6
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Thu Aug 20 15:45:13 2020
InstallationDate: Installed on 2020-05-03 (108 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
SourcePackage: totem
UpgradeStatus: No upgrade log present (probably fresh install)
XorgLog: Error: [Errno 2] No such file or directory: '/var/log/Xorg.0.log'