I have a Macbook Pro (Non-Retina) that I use for developing. It's a Macbook Pro 9,1--the last non-Retina model--with a 2.3GHz core i7 and 16 GB of RAM. It has two internal hard drives, as I removed the DVD drive and replaced it with another hard drive. I have Yosemite on one drive and Mountain Lion on the other, so I can test apps I develop on both.
I've noticed a really, really weird thing on Yosemite:
Occasionally, I'll see apps hang with an infinite spinning beachball. I've seen this in Chrome, Adobe Updater, and a few other apps.
If I use Force Quit to force these apps to quit, occasionally the app will quit...but its windows will remain behind! The app doesn't show in the Dock, the task switcher (command-tab), or Activity Monitor. But the windows are still there. The windows can be dragged around but are otherwise nonresponsive.
Occasionally, these phantom, ownerless windows will eventually vanish, after five or ten minutes. Occasionally, they stick around until I restart. I can re-launch the errant app and it works fine, as long as I don't try to interact with any windows that are still hanging around from the force quit.
I am at an utter loss to explain this behavior. Has anyone else seen anything like this?
(Edited to add) I have observed this behavior of a fresh install of the current version of Yosemite.
Last edited by tacit; 12/18/14 10:36 PM.
