Photoshop window not activating

[jahaik]

I'm not sure exactly how to describe this issue, but when I CMD+Tab into photoshop from another application, or alternatively, after placing a new document into an existing photoshop document from bridge, I can not use any short cut keys and get an error sound (no message) unless I click somewhere on the menu bar or a grey area in one of the panels. It seems like when flipping back to photoshop the front document is not "active" and requires it being click in order to begin working. I'm on the latest build,  24.0.0

[S_Gans]

The only thing I can think of, that makes that happen is if there's a dialog box popping up UNDER your Photoshop window... Next time it happens, please move the PS window around, and look behind it. 
This kind of thing can happen, if you somehow activate the Finder, when switching among applications...

[jahaik · Accepted solution]

Turns out it is a Nik plug in, if the Nik menu window is enabled than this
problem occurs, if the menu window is closed (the plug in can still be
accessed through the photoshop menu) the problem resolves itself--
*sent from my phone*