Summary
You cannot stop while piloting an actor/prop
If you sync with revision control, your editor will crash
Please select what you are reporting on:
Unreal Editor for Fortnite
What Type of Bug are you experiencing?
World Building
Steps to Reproduce
Right click to pilot a prop; notice you can pilot the object and you can’t stop piloting
If you sync while piloting the editor will crash
Piloting a camera device will never present the camera view again
Expected Result
You can stop piloting an object and piloting would stop while syncing
Observed Result
Game crashes and cannot stop piloting
Platform(s)
windows
Additional Notes
Remove pilot until fixed 
move actor to camera seems good enough for most cases