Dragging in event graph does not work after touch event with a breakpoint. This issue persists after the PIE has stopped as well. But the issue is resolved when the project is reopened.
This issue occurs in the 4.15.2 and the 4.16 preview in the binary builds
This issue does not occur in 4.14.3 binary build
Head over to the existing AnswerHub thread and let us know what's up.