This happens on 4.12.5 and 4.13
I have around 200 Actors which need to move to a random location in a radius of where they spawn.
The strange thing is that some of them get invalid location to move to.
Hello,
This is currently a known issue, which you can track the status of here: Unreal Engine Issues and Bug Tracker (UE-30355)
Thank you for your report.
Have a great day