Last modified: 2014-05-16 20:38:17 UTC
Per the design mock-up at https://trello.com/c/xCo6uLAZ/9-5-references-dropdown-from-toolbar-styling (and a conversation with Kaity to confirm), when a user opens a popupToolGroup, all other tools in the toolbar should be disabled. Clicking off the popupToolGroup should close the popup and reactivate the other tools.
After talking with Trevor and Kaity, we're going to punt this one for now.