Terminal sticky scroll incorrect identifies the top of buffer as a command

[connor4312]

I had a very long terminal whose lines reached the terminal's max limit, and then had an ugly sticky scroll state:

[AriPerkkio]

I think I've run into this same issue for couple of weeks now. Below is video where previous command jumps on top the current cursor position. I think this only happens on Bash as I've been unable to reproduce it on zsh.

Really happy to find out that disabling "Terminal: Sticky scroll" fixes this! I guess that feature was enabled by default couple of weeks ago?

vscode-terminal-sticky-scroll.mp4

[Tyriar]

@AriPerkkio it should be enabled by default only in insiders currently.

[Tyriar]

I have also seen this happen occasionally, the repro seems to not be simply filling the scrollback unfortunately. Closing until we get good steps

[AriPerkkio]

I can reproduce this constantly with following script:

#!/bin/bash

var=""

for i in {1..50000}
do
   var+="\n line"
done

echo -e "$var"

Save script as repro.sh and execute it in bash inside vscode:

$ sh repro.sh
# 1. Wait for script to finish.
# 2. Press CTRL+L or what ever combination your computer registers for clearing the terminal.
# 3. Terminal should be clear now.
$ ls
$ ls
$ ls
# Output is not visible

terminal-scroll-repro.mov

[Tyriar]

@AriPerkkio perfect thanks, looks like clearing is confusing the current command since the cursor moves upwards.

[flyyuan]

I want to fix

[tisilent]

exec 'toggle sticky scroll'

[tisilent]

en...

[Tyriar]

Maybe the root cause: #166864