Has anyone had this happen, and, perhaps found a solution?
I'm in MC7 on a macBookPro Retina, with two monitors attached.
The bins sometimes to off the top of the monitor, and since the only way to move the bin is by grabbing the top bar, they're stuck, slightly out of reach!
I've run into this before (and googled it and found others with the same problem). It seems they've changed the resolution on the monitor, enabling them to grab the bins and move them, and then changed the resolution back.
This seems like a bug, right? Wouldn't this have been fixed by now?
I think this happens when the two monitors are at different resolutions. The fix is as you stated. I would be sure to grab the entire MC Workspace window and drag it back smaller. If you do that just for the Bin window inside the workspace, it will revert back out of reach when you shut down/restart MC.