I just noticed tonight that after upgrading to the latest version I can no longer make the information panel go away after turning it on in the library window. If I do a cmd+L and open the library in its own screen I can turn it off but if I just use the small/quick library window I cannot get it to turn off again.
I tried to reverse this and went to the separate cmd+l library window and turned it off but now I can't turn it on again in the small library window.
Any one else having this issue? Maybe I just need a reboot