But after commenting that out again the issue still persisted. Only on their machine: Chrome on Windows 10. Chrome on Mac looks normal. This happens also in incognito mode, so it’s not one of their extensions acting up.
Finally, I tried coping the text out and in (“Have you tried turning it off and on again?”), but the issue still persists.
Does anyone have an idea what could be causing this?
That’s Line Separator, a character that should be invisible at all time. But it’s there in the text and you can remove it. Copy the text to an editor like sublime text. navigate in the letters using the arrow keys, and note how the cursor will stop on step after the “All”. There’s your faulty character. Remove it and repaste back.