In reply to 1: That’s good as I was not expecting it to be specific to 10.10, as mentioned, it’s been pretty rock solid in the time I’ve been using it.
2: That’s really weird… I’m seeing these kinds of problems everywhere in the editor. Keeping in mind it doesn’t always trigger the bug. So just use it for a while, you may find you just have less of a problem than we do.
3: Around 10.10, I know it’s not intentional, I’m just saying that some limited testing on it now could avoid a lot of pain when everyone upgrades in October(?).