I am running FM12 on OS X 10.11.1 and have a database with many elements in the relationship model.
When I select one of the elements to move it, or some other action, the whole window goes white until the selected element is released. If I click and drag, the element does move, I just can't track its movement.
Is there a limit on the number of elements in a Relationship Diagram or something else I can do to get the display to work.
Relationship diagrams work as expected in smaller databases.