AUI Diagram Builder connections jump if diagram area is scrollable

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: master-deprecated
• Fix Version/s: 2.0.x, master, master-deprecated, 2.5.x, 2.0.0.15-deprecated, 3.1.x
• Component/s: Diagram Builder
• Labels: None
• Fix Priority: 3
• Git Pull Request: https://github.com/natecavanaugh/alloy-ui/pull/263

When the diagram drop area is scrollable (larger than its container), the connection lines will jump on mouseover or mouseout.

Steps to reproduce:
1. Instantiate a diagram builder module demo.
2. To enable scrolling, add a style tag to the head of the demo's index.html file and define the following styles:

.diagram-builder-content-container

{ padding-left: 280px; height: 500px; overflow: auto; }

This will cause the diagram drop area to be larger than its container, enabling it to scroll.

3. Scroll down or up if necessary
4. Mouse over a connection line.