Comment 5 for bug 1820085

I found a corollary to this that is still present. I attach an example board.

If you change the outline of the zone fill and deselect the zone, the copper will remain visible outside of the board. Also, it flashes on my screen.

Reverting to the commit prior to 3692c511d0 restores the correct behavior (no flashing, zone displays and updates properly)