Spell Checking disconnect

This may be due to relying on Apple code.

I’ve noticed that if I ask spell check to ignore a word, such as a colloquial misspelling in someone’s dialogue, it seems to work fine (the little red underline goes away).

But if I then view the same doc in Composition Mode, the red line comes back, and I have to go through the same procedure of asking spell check to ignore the word to get the word accepted again.

Can this be fixed?