Get Rid of Stuck Run Bars on OS X Dock With Terminal Command
If you have folders on your dock with stuck progress bars, this is frustrating. On Six Colors, they show you how to make the stuck progress bar disappear.
You will need to run a familiar command to get rid of these progress bars. Open Terminal (Applications> Utilities) and enter:
killall dock
Your dock will reboot and that nasty stuck progress bar will disappear.
Quick Tip: Get Rid of Stuck Progress Bars in Dock Folders | Six colors