Plex on Win11 - White video background when using stretch/zoom to fill

[Kansalis]

Describe the bug
When enabling Ultrawidify in Plex on Windows 11, video background is set to white instead of black. Same issue with all browsers. On the same PC with Win10, background bars are black as expected. Stretch/Zoom modes etc work as expected, just any remaining edges outside the video are white.

To Reproduce
Enable extension on Plex video

Expected behavior
Background should be black instead of white

Screenshots

Browser and OS

• Browser/browser version: Chrome, Firefox, Edge. Issue persisted through multiple versions
• Operating system: Windows 11 release version
• Ultrawidify version: 5.1.1 (same issue since Aug 2021)

[tamius-han]

I know I've been through this once before. Assuming you're self-hosting, you will have to visit [popup] -> Advanced settings -> Additional CSS (while on plex) and paste this into the box:

.application {
  background-color: #000;
}

Like so:

This should fix the issue. You will have to do that if you're self-hosting because ultrawidify applies site-specific fixes based on the URL.

If you're viewing this on app.plex.tv, then someone hasn't kept his promise from the last time, though (#158). I'll have to check that.

[jagilbertvt]

While that fixes the white bars on video playback, it also changes the background color to black when viewing the plex library/dashboard/etc.

[qu4ckth3duck]

Sorry to necro; I ran into this problem but it seems to only happen when playback is on the local IP and not app.plex.tv.