Attempting to change a variable that is connected to a node and an empty reroute node by dragging a reference on top of the existing reference causes the editor to freeze.
The user provided a video of the issue occurring: [Link Removed]
Found in 4.11.2 binary. Reproduced in 4.10.4 binary and Main CL 2952833
1. Open the editor (ThirdPersonProject)
2. Go into the ThirdPersonCharacter blueprint
3. Drag the Camera Boom from the component tree into the blueprint
4. Drag off of Camera Boom and Get Forward Vector
5. Drag off of Camera Boom and add a reroute node
6. Drag the Follow Camera on top of the Camera Boom variable to change it.
Result: Editor will freeze
Expected: Editor would not freeze and variable would be changed.
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