Are you referring to the "'''Find''' in current page" feature in Firefox? https://support.mozilla.org/en-US/kb/search-contents-current-page-text-or-links As far as the "spell check" feature in Firefox goes ... Considering that Libre Office and Firefox use the same Hunspell dictionaries I would say the dictionary might be the source of that issue. ''Those dictionaries are 3rd party open source software which are provided by and maintained by a variety of people.'' https://hunspell.github.io/ https://en.wikipedia.org/wiki/Hunspell And I don't know if the "'''Find''' in current page" uses the "spell check" dictionaries or not - in one or both applications. But you mentioning the same actions on both Libre Office and in Firefox would lead me to think that may be a possibility. As far as a "solution" from Mozilla, the best that I can recommend is to file a Bugzilla report and wait for a response from the Mozilla developers. https://bugzilla.mozilla.org/ https://developer.mozilla.org/en/Bug_writing_guidelines

"the-edmeister" - Alright, I'll report it. Thank you.