All continuous file operations are queued and executed one after another.
If there are any background operations, the progress bar will be shown in the top-right corner of each window. The queue is shared across all open windows.
Click on the progress bar to open the queue popup. There you can see the progress for each operation, and pause or cancel any of them.
Operation queue is designed to be fully accessible with a keyboard. Press
= to open the queue. Operation list can be scrolled with the arrow keys,
P pauses the selected operation,
D aborts it.