Wrong z-order when more than 100 post-its
After drag&drop a post-it on SCRUM board, every post-it receives z-order. Value of that z-order is order number of the post-it, from 1 to post-its count.
Post-it edit window has z-order 101, so some post-its cover it.
Solution: assigning the same, fixed, less than 100 z-order to post-its.