We've deployed a further fix today for the < character being appended to certain posts, and URL's occasionally being unfollowable due to some hidden control characters being appended.
I had noticed that in a few spots, but wasn't able to reproduce it. Is that same root cause as the cursor appearing to be 1 character behind when typing a post? The text appears correctly, but it's weird when typing.
Nope - at least, I don't think so...
The tedious underlying reason was to do with if you happened to end your post with a new-line, stripping off some invisible formatting code wasn't quite correct.