Details

• Browser and browser version: Chrome 97
• OS version: macOS 11.6.2
• xterm.js version: 4.16

Steps to reproduce

Run ls -G && nvim with webgl renderer

With WebGL

With Canvas

Other Examples

vercel/hyper#6242
vercel/hyper#6239

I'm able to consistently reproduce using the steps above for webgl renderer, the hyper issue I've linked also mentions the same for canvas but I'm not able to get a consistent repro

Finding

5437571 is the first bad commit

@Tyriar I'm not familiar enough with xterm core code to fix this, I can try if you can provide some direction as to what might be wrong from the commit I've mentioned.

Till we can get this, we can use 4.15 since this affects usability a lot. But that version suffers from #3547, I've opened #3618 to work around that in ligatures addon itself