Blender randomly deleting objects?

I’m having this problem, where sometimes If I don’t make an object active, it randomly dissapears. If I look in the outliner, it says it’s still there, and the visibility is toggled on. And if I look at the corners of my 3D view windows it indicates it’s selected. But it’s simply just not there for some reason. Any idea what’s causing this?

First guess? I’d say the camera frustum.
Post a blend with your supposedly deleting objects…

Are you in Local view? Toggle with Numpad-/