4.4.2 version (update from 4.2.0) has not any possibility for disabling Spellchecking, nowhere in Settings
Steps to reproduce
Type any text in text field, text is in other language then is selected or provided by MM Spellchecker.
If I write in Czech and do not want (!") any spellchecking, every word is red underlined!
I see added noe feature for spellchecking without adding also basic feature for enable/disable this feature. It cannot be planned, it MUST be THE bug. Do you remember Starship Troopers (1997)? THAT bug!