This is a derived question from this one.
received his answer there, but I have no clue what is going on.
In some assemblies (not all) when I try to insert a new part, the main body of assembly disappears.
A short movie and a sample assembly is attached.
Here's a bit about my situation:
OS : Windows 10 Enterprise x64 with latest updates.
Graphic Card : NVIDIA Quadro K600. Drives are downloaded and installed from here
SW : Solidworks 2018 SP0.1
Once again, not all of my assemblies show the same result. Up to now I have only two assemblies that can reproduce this.