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Can't enter upper case letters in a PowerShell (sometimes) #12968

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opened 2026-01-31 03:30:13 +00:00 by claunia · 2 comments
claunia commented 2026-01-31 03:30:13 +00:00
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Originally created by @ak-paca on GitHub (Mar 11, 2021).

Not sure whether it is a PowerShell issue or a Terminal one.

Environment

Win32NT 10.0.19043.0 Microsoft Windows NT 10.0.19043.0
Windows Terminal
Version: 1.6.10571.0

Steps to reproduce

Occurs randomly

Expected behavior

I could type and paste uppercase letters as much as I want.

Actual behavior

Sometimes when I'm pasting copied text string that contains uppercase letters or trying to type them manually (using keyboard) they simply refuse to appear.

Very embarrassing bug that can only disappear after I relaunch the shell.

Originally created by @ak-paca on GitHub (Mar 11, 2021). Not sure whether it is a PowerShell issue or a Terminal one. # Environment Win32NT 10.0.19043.0 Microsoft Windows NT 10.0.19043.0 Windows Terminal Version: 1.6.10571.0 # Steps to reproduce Occurs randomly # Expected behavior I could type and paste uppercase letters as much as I want. # Actual behavior Sometimes when I'm pasting copied text string that contains uppercase letters or trying to type them manually (using keyboard) they simply refuse to appear. Very embarrassing bug that can only disappear after I relaunch the shell.
claunia added the Needs-TriageNeeds-Tag-FixNeeds-Attention labels 2026-01-31 03:30:14 +00:00
claunia commented 2026-01-31 03:30:15 +00:00
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@zadjii-msft commented on GitHub (Mar 11, 2021):

Okay, so this is bizarre. We've seen this intermittently before, over in #7087 and #8450. From that thread: https://github.com/microsoft/terminal/issues/7087#issuecomment-676782357

Found a fix. If you have the same problem as me, then updating PSReadLine to the latest preview version can help you. Check out this PowerShell/PowerShell#10794 and this PowerShell/PSReadLine for more information.

@akivanov Could you try that, and see if that resolves the issue?

@zadjii-msft commented on GitHub (Mar 11, 2021): Okay, so this is bizarre. We've seen this intermittently before, over in #7087 and #8450. From that thread: https://github.com/microsoft/terminal/issues/7087#issuecomment-676782357 > Found a fix. If you have the same problem as me, then updating PSReadLine to the latest preview version can help you. Check out this [PowerShell/PowerShell#10794](https://github.com/PowerShell/PowerShell/issues/10794) and this [PowerShell/PSReadLine](https://github.com/PowerShell/PSReadLine) for more information. @akivanov Could you try that, and see if that resolves the issue?
claunia commented 2026-01-31 03:30:15 +00:00
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@ak-paca commented on GitHub (Mar 11, 2021):

It turned out that STR from https://github.com/PowerShell/PowerShell/issues/10794 were indeed triggering the bug. And after installing a new version of PSReadLine STR doesn't lead to a bug anymore. Thank you, @zadjii-msft!

@ak-paca commented on GitHub (Mar 11, 2021): It turned out that STR from https://github.com/PowerShell/PowerShell/issues/10794 were indeed triggering the bug. And after installing a new version of PSReadLine STR doesn't lead to a bug anymore. Thank you, @zadjii-msft!
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Reference: starred/terminal#12968
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