When I used to compose a post I could put any old typo in there and it would be accepted. It was the main reason I composed in a text editor, do a spell check, then C&P into VV, so as not to look stupid.
I am now finding that if I post directly any mistakes get highlighted, underlined and in blue, as I type. Also, if there are words acceptable in my text editor - contractions, proper nouns, etc. - they now get flagged when I C&P.
It is doing my head in.