Pages 5.1 underlines some words as misspelled, but does not allow me to "Ignore/Learn Spelling" I am using Pages 5.1. When I misspell words, spellchecker underlines them in red. I am usually able to either "Ignore Spelling" or "Learn Spelling" when I right-click the word:



But for some words, those options do not appear despite spellchecker underlining them in red:



This can be particularly annoying when I use recurring names. Why can't I "Ignore Spelling" or "Learn Spelling" on these words? And is there a way to fix it?
I create technical papers, and many words are not recognized by spellchecker. Some words can be learned using control-click but most can't be used at all until added to the dictionary. This is very annoying and time-consuming.

The one things that helps me add words is to use the arrow cursor keys to move the insertion point to the end of the word or past the space and then back a space to "jog" the software into letting you add the word.

If that fails, quitting the app or restarting is sometimes effective.