Ctrl z drawing bug

[Griogre]

FGU, Image Drawing mode sync problem

If the GM and player select the "pencil" on a map image and draw on the image if either uses Ctrl z the person using Ctrl z has part of the drawing errased but the other doesn't.

In the example below the GM left and Player is right.

Player outlines an L shaped hallway except for the north alcove in purple. GM outlines the north alcove in yellow-green. GM presses Ctrl z and deletes the part of the outline around the north alcove. His map updates, but the player's does not. Player presses Ctrl z and deletes part of the south purple wall on his map but not the GMs.

The Ctrl z key should work like the eraser tool and force an update on the other computers.