**BUG** Concise problem statement: If I have copper pours turned off (Ctrl-M) and I perform an undo (Ctrl-Z), the copper pour is turned back on and redrawn. It is extremely annoying because on large PCBs and slow laptops, a repour can take 20 seconds or more! Steps to reproduce bug: 1. Draw a copper pour. 2. Design a PCB. 3. Turn off copper pour with Ctrl-M. 4. Move a component. 5. Move another component. 6. Undo the previous move with Ctrl-Z. 7. The copper pour is redrawn. Results: The copper pour is shown and redrawn. Expected results: The copper pour should remain hidden. Browser: Chrome, latest