The issue is, that on my computer the draft analysis does not work dynamicly. After selecting the reference plane, I need to manually click "Calculate" button, that in nomrl circumstances should not exist. Than each time when I do want to change the reference plane, I need to click the button again ro recalculate new draft analysis. And the colors from the analysis does not stay after I confirm the Draft Analysis - they dissappear.
I found this topic: https://forum.solidworks.com/thread/44401 And the explenation that the GPU is the problem does fit to my obserwation. Yet in my case, even if I do not have dedicated graphic card, I can not agree, that it is too weak. I do have GeForce GTX 1060, so th problem is not lack of power, but some bad settings. Especially, that I did have the same SW version installed before on the same PC, and the issue occurs after I reinstall SW.
Perhaps an dll library that is not registered (already needed to register two dll's in order to enable thumbnails preview according to this instructions: https://www.javelin-tech.com/blog/2016/03/solidworks-thumbnail-preview-missing/), or some registry entry, or just graphic card setting - yet I tried many different options and can not make it work.
I do work on Windows 7 x64, with SolidWorks 2011 SP1. Yeah, I know that the soft is very much out of date, but I can not afford to update it. And I do know, that it should work. Just can not figure out how.