The Drop-down calendar fails to drop down in certain unidentified situations on FileMaker 14 (tested only on Mac). Upon clicking the calendar icon the field gets focused but no calendar appears. It only happens on some portals and on an empty portal row, when attempting to create a new record/row. Inputting the date manually works so the relationships is ok. In other portals it works as expected.
The field performs as expected in FileMaker 13.
I attach a short movie clip to demonstrate the issue.