Rune Page sorting bugs

I just want to sort my rune pages alphabetically...

You can do this with drag&drop in the drop-down menu. BUT whenever I try it, it feels really clunky and buggy. The behaviour is soo random:

• Sometimes two rune pages switch places instead of the dragged page just moving in between
• sometimes the dragged page goes to the 1st position
• sometimes a completely different rune page moves too
• I have to edit and save one rune page to save the new sorting
• sometimes the new order still doesn't get saved
• on the next day, it looks different again...

Anybody else having these kind of problems?