When Firefox was updated to 126.96.36.199 it broke the installation of SpellBound 0.7.3 and since there's still no update from SpellBound my (and I presume other's) spelling has been suffering. I finally broke and googled a bit around to see if there wasn't any solutions, and I found much more than I hoped for: The Developer version of SpellBound, which you can get from MozillaZine Forums not only seem to work flawlessly with FF 188.8.131.52, but also supports spell checking as you type... I actually just installed the new one, and then uninstalled the old one before restarting FF. On first restart of FF, the new SpellBound will do some serious maintenance, like removing the old separate dictionary libraries and reinstalling those languages, but once it's up and running again everything seems just fine... Happy day(s)!