Buffer position becomes desynced from the scroll bar

[cs278]

microsoft/vscode#224750

This issue has been annoying me for months, I've tried to find out what the status of getting it fixed is but there doesn't seem to be an issue here despite the VSCode issue being labelled as such. So perhaps it's slipped through the cracks and if I create this, it will get fixed? 🤞

Details

• Browser and browser version:
• OS version: Ubuntu 22.04
• xterm.js version: No idea - presumably 5.5.0.

[rob-myers]

When scrolling through full-screen CLI app (git log or git diff), sometimes the terminal will not let me scroll up. If I try to scroll up, I am "teleported" back to previous position. As soon as I scroll down, I can't scroll back up to the previous text.

I've seen a similar issue: (a) while Terminal is hidden write many lines, (b) show Terminal and scroll up, (c) cannot scroll down to bottom.

I found a hacky fix:

// on resize observer width > 0
xterm.resize(xterm.cols + 1, xterm.rows);
xterm.resize(xterm.cols - 1, xterm.rows);