Terminal characters replaced when going back with cursor

OS/Web Information

• Web Browser: Microsoft Edge Version 91.0.864.70
• Local OS: Windows 10 20.04
• Remote OS: Debian 10
• Remote Architecture: x86
• code-server --version: 3.10.2 387b12ef4ca404ffd39d84834e1f0776e9e3c005

Steps to Reproduce

1. Type a command (a litte bit longer) and execute
2. Arrow up to use last command from bash history
3. Go back with the cursor (using left arrow key; holding it)
4. Sometimes the terminal is overwritten as seen

It’s also possible to reconstruct the issue while writing a long command and then going back to the start to change something.

Issue is reproduceable for me on different systems,

Expected

The terminal does not replace characters, just from going back to the beginning of the command.

Actual

The terminal line changes and replaces character (Just visually, if the command is executed, the text is still the same)

It seems that it has something to do with rendering, because if the browser is zoomed in and out the text is reset to the correct output.

Logs

Screenshot

Notes

This issue can be reproduced in VS Code: No

[iFrozenPhoenix]

It’s in the terminal settings. The corresponding variable value is terminal.integrated.localEchoLatencyThreshold

I think what could be problematic is the fact, that it’s default value is 30, i.e. the experimental feature is enabled by default.

[iFrozenPhoenix]

Could this problem eventually be caused by the setting “Local echo latency threshold”? After deactivating it (Setting to -1) the problem does not seem to appear again.