Spell Check not working in Gmail

Ever since Safari 5 (which includes Safari 5.0.1), spell check no longer works when writing an email in Gmail for me. I mean I see the red squiggly line under the misspelled word and everything, but when I right click the word, it doesn't show any corrections. And the word remains misspelled with the red line under it. I never have this problem on any other sites or in any previous versions of Safari.