Thanks for the positive words!
As for the bug with the first-second screen, is it to the effect of having you on the second screen whilst your character is in the first? if so that Is a bug I had thought I had solved, so I shall have to give that *another* once over.
As for the double jump leeway, as below, that is a common issue, I don't have a great fix for it right now, but will likely have one sorted either just before the deadline, or shortly after.