I’ve just gotten back from PAX, so sorry for the late reply:
This does happen in a brand new 4.5.1 project.
This works correctly in 4.1.1 PIE, it’s only started happening in 4.5.1 PIE.
It also works correctly in 4.5.1 Standalone.
It is on an AActor derived class. In it’s ‘private’ section.
Hopefully that helps. 