P: Panels and filmstrip black when switching to Develop

I just finished exporting a library and clicked on the import button to import a bunch of images. That resulted in all controls disappearing - I can toggle between show and hide on all four directions, but just don't see any controls

yes, Thanks Russell for posting this temporary solution!  It worked! for me on first attempt.  Haven't had to restart LR, it's been 1/2 hour since I did the work around trick and I'm still editing, bouncing between modules even.  Very grateful for this!

Thanks, Russell, for posting this work-around! 

It worked for me as well. And I agree: very frustrating that Adobe hasn't addressed this. It is a MAJOR hassle. 

This Hiding and Showing as been working for me as long as I leave Lightroom open and Showing. If I Hide Lightroom and select the icon to reopen the panels go black. Very frustrating to see that Adobe has not fixed this bug.

I have found a solution that has been working for me for the past few days. Nothing else mentioned above had helped. Try it and see if it works for you:

When the panels go black, Right-click on the Lightroom icon in your Dock and select Hide. After Lightroom is hidden, Right-click on its icon in the dock again and select Show. The panels should be back.

This has been working for me for the past several days. Sometimes more than once during a long editing session.

2-10-17 again

I'm not into second guessing what's going on inside Adobe (or Apple). At the moment I'm paying money out monthly, and not getting the performance I want because recent updates are broken. There's no meaningful information as to the problem, and no timeline for the fix. Vague comments from Adobe like 'it should be soon' are not helpful, and suggestions to spend time rolling back versions or trashing preferences (!) are no real solution.
It's not an acceptable situation to me as a customer, and it's far from the level of support promised when CC was introduced. Once again Adobe - when is the fix expected?

There has to be more to this issue than meets the eye. Adobe have always addressed problems in reasonably timely fashion, but this issue has been met with stoney silence and inaction. WHY?
Is it because they believe it's an Mac OS Sierra issue? There has to be something going on in the background. In the meantime we subscribers are left hanging. Bad news Adobe.

NEW lightroom still not fixed, but different looking failure: