AllBugsFeaturesChangelogSearchNew post
Sign in with Fluxer
Bugs

Edit history

Earlier versions of Screen sharing forces ultrawide sources into a 16:9 feed with grey letterboxing, newest first.

Current version | Edited by Rex
Changes
- Canary Web 2026.605.11941Removed: ### Logs or screenshotsRemoved: Removed: _No response_Removed: Removed: ### ChecksRemoved: Removed: - ☑ I searched existing issues.Removed: - ☑ I wrote this report in my own words, except for direct translation if needed.Removed:
Show

Screen sharing forces ultrawide sources into a 16:9 feed with grey letterboxing

Summary

When sharing content with a non-16:9 aspect ratio, Fluxer presents the stream inside a fixed 16:9 video feed. For example, sharing a game running at 21:9 or sharing an entire ultrawide display results in grey bars above and below the captured content. The source aspect ratio is not preserved in the final video feed. I reproduced this on both a self-hosted Fluxer instance and the official hosted Fluxer service. I also tested it using two separate clients, which both displayed the same behavior.

Steps to reproduce

  1. Use a monitor with a 21:9 aspect ratio.
  2. Join a voice call.
  3. Start screen sharing.
  4. Share either:
    • A game running at 21:9; or
    • The entire ultrawide display.
  5. View the stream from another client.
  6. Observe that the stream is presented as a 16:9 feed with grey bars above and below the 21:9 content.

Environment

Reproduced on both the official hosted service and a self-hosted instance. Clients tested:
  • Stable Web 2026.806.190827
  • Canary Desktop 2026.602.31138
  • Canary Web 2026.605.11941
Original by Rex
Show

Screen sharing forces ultrawide sources into a 16:9 feed with grey letterboxing

Summary

When sharing content with a non-16:9 aspect ratio, Fluxer presents the stream inside a fixed 16:9 video feed. For example, sharing a game running at 21:9 or sharing an entire ultrawide display results in grey bars above and below the captured content. The source aspect ratio is not preserved in the final video feed. I reproduced this on both a self-hosted Fluxer instance and the official hosted Fluxer service. I also tested it using two separate clients, which both displayed the same behavior.

Steps to reproduce

  1. Use a monitor with a 21:9 aspect ratio.
  2. Join a voice call.
  3. Start screen sharing.
  4. Share either:
    • A game running at 21:9; or
    • The entire ultrawide display.
  5. View the stream from another client.
  6. Observe that the stream is presented as a 16:9 feed with grey bars above and below the 21:9 content.

Environment

Reproduced on both the official hosted service and a self-hosted instance. Clients tested:
  • Stable Web 2026.806.190827
  • Canary Desktop 2026.602.31138
  • Canary Web 2026.605.11941

Logs or screenshots

No response

Checks

  • ☑ I searched existing issues.
  • ☑ I wrote this report in my own words, except for direct translation if needed.