I cannot reproduce this here. If the grid was on when the drawing was saved, it should be turned (back) on when using revert. Does this happen with a particular drawing only? Thanks.

No, the grid wasn't on and it happens occasional. Sorry, I can't identify what it causes neither. But it happens. Yes I know this info doesn't helps you .... :-(

Ok, I played around and I was wrong. The Grid was on but I haven't seen it before I triggered F5. The reload causes to make the Grid visible ...
How is that possible? Same Zoom factor! Try it by yourself. Load this customer drawing (no grid visible) - keep the zoom factor - change something - F5 - = Grid visible

Is the grid not visible initially (after loading the drawing)? Can you post a screenshot? Thanks.

Sure - here we are! Additional info - After reloading with (F5) the grid is visible. If I then zoom out and zoom in the Grid will disappear for ever - regardless of the Grid Button status.
I have the feeling that has something to do with the Grid settings to "auto" ... but you are the Pro ;-)

Note: I tried to edit this posting regarding the attachments - why I can't delete my attachments?

Looks to me that this issue is not anymore existent and can be closed.