Originally Posted by
Zacchaeus
I was able to reproduce after moving the token about a bit. I believe that this is a long standing issue which no-one has been able to identify but it seems to be related to when the occluders are drawn to exactly match the grid. I fixed it by redrawing the occluders so that it's not exactly on the grid. This isn't something that can be reliably reproduced. (also I exaggerated the redrawn line - it doesn't need to be that far away - in fact most of the time just redrawing it is enough).