Given that the change was deliberate, it is unlikely that the capability will be reinstated So I asked about workarounds (I envisioned a userscript) and eventually ended up with a vibe-coded AutoHotkey script, which is working well for me, on Window...
I don't know if this will help, but these are the most recent commits that may relate to the clipboard: https://github.com/search?q=repo%3Amozilla-firefox%2Ffirefox+clipboard&type=commits&s=committer-date&o=descbut this is too much information for me...
I also noticed this and have been trying to resolve it since last night, to no avail!I tested a few versions of Firefox ESR Portable and found the links were fine on 153.3.0 but not 153.4.0 - though I don't know which normal version numbers these cor...