Thanks. Updated to 1.9.2 and it's fixed.
Sep 25 2018
Sep 17 2018
Sep 13 2018
Jan 27 2017
When enabling Generate UVs the selected UVmap becomes first UV layer.
The change (UVMap.001 becomes the first UV layer.) happens not when adding torus but when enabling Generate UVs and only if the UVMap.001 is selected.
Can't reproduce the bug on Windows 8 Enterprise 32bits using with Intel HD graphics