Apostrophes trigger weird backspace behavior in Mail
I upgraded to Mavericks a couple of days ago, and since then I've had the weirdest and most annoying problem in my Mail app (and ONLY in my Mail app):
If I type a contraction ending in "re", (example: we're, they're), the spacebar sends the cursor back one character instead of adding a space after the word. So, it deposits the cursor back beteween the "re".
If I form a contraction with any other letter combination (I'll, he'd, it's), the spacebar does nothing on the first strike. I have to hit it twice to get a space after the word. At all other times, the spacebar functions normally.
I've tried turning off spelling checks on my global keyboard preferences, and on Mail.app preferences; I've tried restarting the app and my MacBook. Nothing helps. And since I'm not a very formal writer, it bites me in the *** approximately seventy thousand times a day.
Is there any way to cure this disease?
MacBook Pro with Retina display, OS X Mavericks (10.9.1), Affects Mail.app only