I want to be able to sort new statuses so that they appear in a logical order in the status dropdown on a specific issue.
I've lurked some forums and figured out that the best/only way to do this should be in the screen below.

What's bugging me is that only some are sortable. On the printscreen above, I've marked the red ones as they could not be sorted, not matter how I tried, (up, down, more times than one, different browsers). However above a specific line (green box and upwards), it went just fine to sort statuses.
Is there some "rule" or "limit" to a status that it cannot be sorted that I'm not aware of?
(Note that there are probably 100 custom statuses in this list.)
Thanks!
/ Jakob