I've noticed that at the bottom of my desktop Yosemite has started displaying a strange sort of indicator - it looks like a horizontal scroll bar, it's a thin grey rectangle with rounded ends.

If I use large dock icons it overlaps with the dock itself, if I shrink the dock you can see that it is unrelated to the dock.

And no, it's not part of my wallpaper!

Mystery grey rectangular icon on Yosemite desktop

  • That is indeed the scroll bar. Do you have any applications that put a small window on your desktop? (For example, Bowtie places iTunes controls in a small window on the desktop.)
    – tubedogg
    Nov 18 '14 at 23:12
  • Good suggestion but not that I can see - closed every application, menu item app, desktop widget and even flushed out some unused preference panes - still there.
    – benz001
    Nov 19 '14 at 1:42
  • Have you upgraded to 10.10.1 ?
    – Jash Jacob
    Nov 19 '14 at 8:14
  • Yes I have actually - only noticed it after the upgrade
    – benz001
    Nov 21 '14 at 5:44

It looks like a bug, not some sort of meaningful indicator as I first thought.

After quitting every application and restarting it's now gone away!

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