grid snap & display grid do not align

[cremsberg]

This is not new to AC12. Somehow, once in awhile, the grid snap gets mis-aligned from the display grid lines and I can't figure out how to get it back. I can double click on the User Origin button to get rid of any unintentional user origins, but it does not fix the problem. If I have my display grid at 1 foot each way and I draw a wall with Grid Snap turned on for 1 foot, the wall does not fall on the display line. I can probably import all my work in to an undamaged new template, but I really want to know what caused this in the first place.

[Anonymous]

Snap and construction grid doesn’t align.
The small black dot next to the cursor shows the snap grid, which should align to the origin (in the middle of the circle which I have zoom in to.)
Origin x,y = 0,0
Black dot x,y = -7,-3 (mm)
(fig2)

[Anonymous]

Test.
Turn on Construction grid. Draw polygon in red.
Turn on Snap grid. Draw polygon I blue.
The polygons should overlap, - they don’t

No user origin.
If edit origin was in effect it should now be relative to the red polygon. (Relativ coordinates turn off)
Conclusion: this is a bug. Please fix fast.
(This is not completely new in R12.2285. I have had similar problems in R9, R10 and R11 but then only with drawings with large coordinates)