Actors disappear in scene when making any changes to position or rotation.

Here is a better quality version, my mouse however wasn’t included for some odd reason. It still shows up sometimes, but what i’m doing mostly is showing that the Hidden in game actor option and visibility is not touched and they should be visible, when I select and alter the PLA they disappear from the view port.

A second look and the video doesn’t seem smooth now… Ok, I guess one more time…