P: Panels and filmstrip black when switching to Develop

I am having the same problem. I need to process photos and I am unable to get anything done. Very Frustrating.

We wait on them fixing. 🙂

yippee ! what happens now ?

This intermittent issue has been confirmed by the Lightroom QE team.

To workaround this issue, hit Cmd + H to hide Lightroom and Cmd + Tab to bring it back.

If you're hitting this often, you can roll back to a prior update. Instructions are here https://www.lightroomqueen.com/roll-back-update-previous/

have i found a bug in 2015.2 ? i’ve been working in the print module and every time i hit the print button the whole background and side panels black out completely...the one workaround i
have found is by minimizing the window and then bringing it back again – hardly high tech ! any other reports of anything similar ?
later on - this bug is now happening all the time , ie whenever i click to change eg from one module to another.

Occasionally, for some reason I haven't been able to figure out and
therefore can't reliably replicate, all of Lightroom's user interface panes except the center one disappear.  Some input of mine obviously is causing this; it doesn't happen spontaneously.  I haven't inadvertently set the application into Lights Out mode or hidden one or more of the control panels: it's just that everything is blacked-out except the center of the display.  I am unable to escape from this funny state using any of the interface-recovery methods I'm familiar with.  The only way I've found to restore the display to its normal state is to kill and relaunch the Lightroom process.  Bug?  Cockpit error on my part?

I am seeing this with LRCC2015.8 too.  I am forced to restart LR to get my side panels back.  It seems to happen when the app is in Develop as a background task  for a long period of tim (for me it was overnight)   I suspect a memory leak.   When I return to LR I fin the side panels missing.  Using the keyboard to switch modules does not refresh the side panels (even though the side panels are different panels for the left and right panels. 
 

OK. Let me know if comes back.

Thanks Jeffrey.
I quit all apps and restarted the iMac and Lightroom, it seem to have sorted it. The panels' control sliders and the filmstrip thumbnails are back in develop module. 

No I haven't used Lights out mode