Operating system: Windows 10
Graphics card: GTX 1080 ti
Blender 2.8 January 31, 01:48:40 - 8c8979067490 Beta
Blender 2.79 (It worked)
Blender 2.77 (It worked)
Absolut grid snaping dont work with "Face Inset" and neither with loop cuts.
Exact steps for others to reproduce the error
Turn on the snaping (increment) -> turn on absolut grid snaping -> spawn a plane -> try to snap while loop cutting or inseting faces.