Has anyone else noticed that the first time you edit a post you have made Quick Edit works but the second time it doesn't and you have to use "More Options"? Then the third time Quick Edit works again and so on.
I'm using FireFox 7, and have just tried editing a post 10 times, and each time it worked as expected. I don't know what you mean about getting an edit cursor in the window? I just click anywhere in the text box, and the cursor appears. Does this not happen for you?I use IE8 and I see the same kind of pattern - I hadn't twigged that it was alternating though.
For anyone who has not seen it, when you click "edit" under a post a pop-up appears with the post text in it - but then it's pot luck whether you can get an edit cursor in the window. If not, by clicking "more options" the pop-up is replaced with a full browser page edit screen - and the cursor etc works properly in that.