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tmux status bar flickers on fast output #22756

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opened 2026-01-31 08:22:31 +00:00 by claunia · 4 comments
claunia commented 2026-01-31 08:22:31 +00:00
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Originally created by @nanaya on GitHub (Jan 9, 2025).

Windows Terminal version

1.21.3231.0

Windows build number

10.0.19044.5131

Other Software

tmux 3.4, bash 5.2.21(1), ubuntu 24.04.1

Steps to reproduce

  1. start tmux
  2. split screen horizontally
  3. loop apt install on the top pane (while true; do apt install; done)

Expected Behavior

Intense apt output

Actual Behavior

Intense apt output with tmux status bar flickering and moving up and down joining the party

doesn't happen on putty (the one on the left)

https://github.com/user-attachments/assets/78bcbbee-4f04-498d-be77-961015dc63fc

Originally created by @nanaya on GitHub (Jan 9, 2025). ### Windows Terminal version 1.21.3231.0 ### Windows build number 10.0.19044.5131 ### Other Software tmux 3.4, bash 5.2.21(1), ubuntu 24.04.1 ### Steps to reproduce 1. start tmux 2. split screen horizontally 3. loop apt install on the top pane (`while true; do apt install; done`) ### Expected Behavior Intense apt output ### Actual Behavior Intense apt output with tmux status bar flickering and moving up and down joining the party doesn't happen on putty (the one on the left) https://github.com/user-attachments/assets/78bcbbee-4f04-498d-be77-961015dc63fc
claunia added the Needs-TriageIssue-BugNeeds-Attention labels 2026-01-31 08:22:32 +00:00
claunia commented 2026-01-31 08:22:33 +00:00
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@carlos-zamora commented on GitHub (Jan 15, 2025):

Thanks for filing! A few questions from the team:

  • Does this repro on WT Preview or Canary /?
  • What's your TERM environment variable outside of tmux?
@carlos-zamora commented on GitHub (Jan 15, 2025): Thanks for filing! A few questions from the team: - Does this repro on WT Preview or [Canary](https://github.com/microsoft/terminal#installing-windows-terminal-canary) /? - What's your TERM environment variable outside of tmux?
claunia commented 2026-01-31 08:22:34 +00:00
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@nanaya commented on GitHub (Jan 16, 2025):

It seems fine on 1.22.3232.0. I'll use it a bit more to confirm that it's actually fixed.

The TERM is xterm-256color.

@nanaya commented on GitHub (Jan 16, 2025): It seems fine on 1.22.3232.0. I'll use it a bit more to confirm that it's actually fixed. The TERM is `xterm-256color`.
claunia commented 2026-01-31 08:22:34 +00:00
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@nanaya commented on GitHub (Jan 21, 2025):

I haven't seen the flickering problem for a while now on the newer version. Sorry for the noise.

@nanaya commented on GitHub (Jan 21, 2025): I haven't seen the flickering problem for a while now on the newer version. Sorry for the noise.
claunia commented 2026-01-31 08:22:35 +00:00
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@DHowett commented on GitHub (Jan 21, 2025):

Sorry for the noise.

Not a problem at all! Thanks for confirming the fix.

@DHowett commented on GitHub (Jan 21, 2025): > Sorry for the noise. Not a problem at all! Thanks for confirming the fix.
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Reference: starred/terminal#22756
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