Less Pollutes Scrollback Buffer in WSL/Ubuntu

[lvfrazao]

Environment

Windows build number: Microsoft Windows NT 10.0.18363.0
Windows Terminal version (if applicable): Version: 0.10.781.0

Any other software?
WSL v1
less 
$ less --version
less 487 (GNU regular expressions)
Copyright (C) 1984-2016  Mark Nudelman

less comes with NO WARRANTY, to the extent permitted by law.
For information about the terms of redistribution,
see the file named README in the less distribution.
Homepage: http://www.greenwoodsoftware.com/less

Steps to reproduce

1. Generate file with random text (enough lines to fill up the screen): $ head -1000 /dev/urandom | tr -dc A-Za-z0-9 > rand.txt
2. Fill scrollback with content: $ for i in {1..100}; do echo $i; done;
3. Open file with random text with less: $ less rand.txt
4. Use the down arrow or pgdn keys to scroll down a bit
5. Exit less and scroll up

Expected behavior

Scrolling up shows input and output from previous terminal commands.

Actual behavior

Scrolling up shows the lines that were viewed in less and overwrites the previous output.

This may be a duplicate of: #3492

[lvfrazao]

Slightly more info, this happens with less, but not with vim or nano.

Would appreciate any known workarounds as this makes working in the terminal rather difficult as I basically lose the ability to review previous output anytime I use less.

[zadjii-msft]

Thanks for the report! This is actually already being tracked by another issue on our repo - please refer to #4676 for more discussion.

/dup #4676

(Apparently that one's actually a dupe of the root cause over in #381)

[ghost]

Hi! We've identified this issue as a duplicate of another one that already exists on this Issue Tracker. This specific instance is being closed in favor of tracking the concern over on the referenced thread. Thanks for your report!