Modal scroll disappears on nested modals
If you open more than one modal (nested modals) and their size requires a scrollbar which it's bigger than the screen when you close the last opened modal with scrollbar the other scrollbars can't be used so you can't move in the modal.
Steps to reproduce:
1- Open Leads and Opportunities
2- Select a party
3- Open the party
4- Add a new relation
5- Open the party in the relation
6- Close the relation party modal
7- You won't be able to scroll in any of the left modals.
https://stackoverflow.com/questions/19305821/multiple-modals-overlay