I've replicated this issue with Firefox 120.0 on Windows 10 x64 following the STR from Comment 26. Verified as fixed in the latest Nightly 127.0a1 and Firefox 125.0b7 versions on Windows 10 x64, macOS 13, and Ubuntu 22.04, as the issue no longer occurs.
Bug 1865914 Comment 34 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
I've replicated this issue with Firefox 120.0 on Windows 10 x64 following the STR from Comment 26. Verified as fixed in the latest Nightly 127.0a1 and Firefox 126.0b7 versions on Windows 10 x64, macOS 13, and Ubuntu 22.04, as the issue no longer occurs.