I have a strange problem with an assembly. Whenever I insert a component, or copy a component it will disappear when I move it. It still shows up in the design tree, and I can see it after I Show Component. After I've done that it will stay visible, but there's a little red/yellow/green symbol next to the part symbol in the design tree until I rebuild the assembly.
I'll try to insert a video of the behavor here. Embed didn't work right for me, so here's the link below of the video: