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Buffer goes missing when using powershell #3387

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opened 2026-01-30 23:20:09 +00:00 by claunia · 6 comments
claunia commented 2026-01-30 23:20:09 +00:00
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Originally created by @Tyriar on GitHub (Aug 12, 2019).

Environment

Windows build number: 10.0.18956.1000
Windows Terminal version (if applicable): 0.3.2171.0
Happens in VS Code too

Steps to reproduce

  1. Run or launch a powershell terminal
  2. Press enter a bunch of times (echo also triggers the behavior)

Expected behavior

Scrollback/scroll bar should appear

Actual behavior

No scroll bar

ps

Originally created by @Tyriar on GitHub (Aug 12, 2019). # Environment ```none Windows build number: 10.0.18956.1000 Windows Terminal version (if applicable): 0.3.2171.0 Happens in VS Code too ``` # Steps to reproduce 1. Run or launch a powershell terminal 2. Press enter a bunch of times (`echo` also triggers the behavior) # Expected behavior Scrollback/scroll bar should appear # Actual behavior No scroll bar ![ps](https://user-images.githubusercontent.com/2193314/62886892-ec0da180-bcf0-11e9-87b4-c837e72dd6eb.gif)
claunia added the Resolution-ExternalNeeds-Tag-Fix labels 2026-01-30 23:20:09 +00:00
claunia commented 2026-01-30 23:20:09 +00:00
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@Tyriar commented on GitHub (Aug 12, 2019):

Running ls will make a scroll bar appear.

@Tyriar commented on GitHub (Aug 12, 2019): Running `ls` will make a scroll bar appear.
claunia commented 2026-01-30 23:20:10 +00:00
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@Tyriar commented on GitHub (Aug 12, 2019):

This happens if you have scroll back as well, enter just redraws the entire screen or something, rather than actually pushing a row up. So the top viewport lines just go missing.

@Tyriar commented on GitHub (Aug 12, 2019): This happens if you have scroll back as well, enter just redraws the entire screen or something, rather than actually pushing a row up. So the top viewport lines just go missing.
claunia commented 2026-01-30 23:20:10 +00:00
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@DHowett-MSFT commented on GitHub (Aug 12, 2019):

This is actually PowerShell/PSReadline#724. Shipping versions of PSReadline are emitting the destructive "scroll" VT sequence.

@DHowett-MSFT commented on GitHub (Aug 12, 2019): This is actually PowerShell/PSReadline#724. Shipping versions of PSReadline are emitting the destructive "scroll" VT sequence.
claunia commented 2026-01-30 23:20:10 +00:00
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@binaryfunt commented on GitHub (Apr 12, 2020):

Should I still be experiencing this bug? It only occurs when running Powershell in Terminal, and according to Get-Module -ListAvailable, I have

ModuleType Version    Name
---------- -------    ----
...
Script     2.0.0      PSReadline

Is there a fix/workaround?

@binaryfunt commented on GitHub (Apr 12, 2020): Should I still be experiencing this bug? It only occurs when running Powershell in Terminal, and according to `Get-Module -ListAvailable`, I have ``` ModuleType Version Name ---------- ------- ---- ... Script 2.0.0 PSReadline ``` Is there a fix/workaround?
claunia commented 2026-01-30 23:20:10 +00:00
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@zadjii-msft commented on GitHub (Apr 13, 2020):

Honestly I don't think I fully understand PSReadline versioning - I think from this diff it was fixed in PSReadline v2.0.0-beta4, but I'm not sure if that means it's in 2.0.0 or not.

@DHowett-MSFT should be able to clear things up for me.

I'm pretty sure you shouldn't be seeing this anymore.

@zadjii-msft commented on GitHub (Apr 13, 2020): Honestly I don't think I fully understand PSReadline versioning - I think from [this diff](https://github.com/powershell/psreadline/compare/v2.0.0-beta3...v2.0.0-beta4) it was fixed in PSReadline `v2.0.0-beta4`, but I'm not sure if that means it's in `2.0.0` or not. @DHowett-MSFT should be able to clear things up for me. I'm _pretty sure_ you shouldn't be seeing this anymore.
claunia commented 2026-01-30 23:20:11 +00:00
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@Tyriar commented on GitHub (Apr 13, 2020):

I was confused by this as well recently, in PS6 prerelease info doesn't show up but you can get it via:

Get-Module PSReadLine | % { $_.PrivateData.PSData }

Apparently PS7 shows prerelease info when you run Get-Module PSReadLine.

@Tyriar commented on GitHub (Apr 13, 2020): I was confused by this as well recently, in PS6 prerelease info doesn't show up but you can get it via: ``` Get-Module PSReadLine | % { $_.PrivateData.PSData } ``` Apparently PS7 shows prerelease info when you run `Get-Module PSReadLine`.
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Reference: starred/terminal#3387
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