Bicycle + Platform = Invisible Sims!

I have a screen recording of it happening but I'm unable to upload it to this reply. I do play with mods but even without them it continues to happen. My graphic settings are 3600 x 2338.

This is the only instance of them being invisible and therein uncontrollable. Since I'm unable to select the sim I cannot change their outfit to try and bring them back. You'll see in my clip that strangely interacting with a piece of furniture brought them back. I usually elect for them to shower since that also brings them back. Not all furniture brings them back though. Again, as you would see in the video, the sim grabs a plate from the fridge, invisible. However, I did give her that instruction before she went invisible so I wonder if getting the command once invisible then can bring them back.  Either way it is bizarre to just lose your sim graphically. 

As for laptop mode, you mentioning it is the first I've heard of it. So I just turned it on and I will try again and see what happens. Cheers! If you all do want me to send the video capture of it happening somewhere, I'm happy to do that!