Spellchecker doesn't work correctly in WordPress
The spellchecker will stop showing misspelled words when editing a post in WordPress. Here is a video of this happening: https://www.youtube.com/watch?v=_S2NZxjh2B8&feature=youtu.be It may happen in other applications as well but I really only use this one.
Opaite Mbohovái (1)
If you suspect or notice issues with the spell checker then you can also toggle Check Spelling off/on via the right-click context menu to reset the spell checker.
Note that some text editors may be using JavaScript to monitor your input that cause Firefox not to notice changes you made to the text.
Moambuepyre