Description of problem:
In IE11, when you move components in large diagrams, sometimes the diagram gets messed up. See attached BP and video.

Version-Release number of selected component (if applicable):
bpmsuite-6.1.0.GA

Steps to Reproduce:
1. Open the attached BP
2. Try moving activities, lines etc.
3. Sometimes the diagram goes very wrong.

Additional info:
Original error description from Gary Hu (ghu@redhat.com):
When moving a component to a different place it causes a lot of issues. see the attached Move_Annotation_Problem.mp4.