At first glance I could not reproduce. I will have a further look tomorrow.
I did a offline and a realtime export of the Stereo Out and it sounded the same as the original playback.
In your video you show us that the offline export messes up the result and the panning of the Guitars is not correct.
The realtime export however works and sounds like the original playback.
1. Control Room
The problem could be related to the Controol Room and VST connections.
Try disabling your Control Room and setting up your Stere Outs to the Oututs of your soundcard.
Does the problem then still persist.
2. Plugin
A plugin could be the problem. Espacially plugins that involve modulation. Some plugins require to run in realtime for there modulation and lfo’s to work correctly. The timing and efect could be messed up if you do it offline.