I just upgraded to Yosemite, and noticed that in Mail.app spell check (as you type) doesn't work properly if two words are connected by a dash (hyphen) and only the second one is misspelled. For example:
- test-test (no squiggly)
- test-asdf (no squiggly)
- asdf-test (squiggly on first word)
- asdf-asdf (squiggly on first word)
Here #2 should get a squiggly but it does not. All other applications seem to work as expected (although I'd prefer to have squigglies on both words for #4). I have Mac OS 10.10.2 and Mail.app 8.2 (2070.6).
Any suggestions for workarounds?