I encountered an issue today where because I set border on the active workspace, we get a size blowup. This is because the border isn't set for inactive windows, so technically the size of the image would need to change slightly. This isn't really accounted for properly. The effect ends up being similar to #378.

I think the takeaway from all of this for me is that AutoSizeImage just isn't a good solution. We may need to look in to writing a custom gtk container