P: Panels and filmstrip black when switching to Develop

Had this problem about a year ago and it has re-emerged in last few days. Software up to date. Mojave 10.14.5 Lightroom Classic 8.3.1  Build 201905241238-dcd7e2de. Generally need to close and re-open to get them back.

Same problem. Started after recent updates of Mojave 10.14.5 and LR Classic 8.3.1. Never experienced before. 

Hello,

My first post here....hopefully this thread is still active.  I'm experiencing the same issue.....I'm running Mojave 10.14.4 and Lightroom Classic 8.2.1.  Everything is fine until I minimize Lightroom.  When I maximize the panels are black.

Has anyone experienced the same with the same configuration??

Thanks

RG

LR is tripping over a bug in Macos 10.11. The only reliable solution is to upgrade to 10.12 or 10.13.  See the official reply: 
https://feedback.photoshop.com/photoshop_family/topics/lightroom-2015-7-in-macos-sierra-bugs?topic-r...

My hardware does not allow me to upgrade past El Capitan, so I'm stuck. The workaround I'm using is to shrink the window (not minimize) when I'm not using LR. It's not optimal but it is functional.

The problem is Macos 10.11 (El Capitan): see the official Adobe replies at the top of this topic: https://feedback.photoshop.com/photoshop_family/topics/lightroom-2015-7-in-macos-sierra-bugs?topic-r...

Even though Adobe's system requirements say Macos 10.11 (El Capitan) or later, it doesn't appear there is a solution for this bug other than to upgrade to a later version of Macos.

I'm running 7.4 Classic CC on a Mac running El Captain and have noticed that while working within LR every single side panel will go black.  They're not collapsed, they just lose all of their content.  The only thing shown is the image (as if you hit lights out, but not really because some borders are still there)

I know this was a bug two years ago.  I'm wondering if it's unique to me or if others are experiencing it too and it's back?  It's frustrating because I have to minimize and restore LR to get them back, and while they're gone I can't navigate to another photo, etc.

> El Capitan, 10.11.6 (heard it was worse in HighSierra), LR 7.3, Camera Raw 10.3

It's not worse on High Sierra. It's a conflict with El Capitan. It's solved on High Sierra. Adobe worked with Apple to get it fixed. If you can upgrade to High Sierra, you can save yourself a lot of heartache. Bear in mind that El Capitan will drop off the supported list later this year, so you'd need to upgrade then anyway.

"....why should I listen to you???"  You re right.  There are a lot of talking heads on the internet. Everybody is an expert. If you want to dig a little deeper in to my posting here, you will find that with few exceptions, they are responses to other people with other problems. The other were legitimate LR bugs that can be documented and are repeatable on other hardware.  The difference between me and those people with your problem is that I have a reputation for solving LR problems. (Over 13,000 posts at Lightroomforums.net) They most likely don't have a reputation for solving LR problems. 
This forum is not IMO the menu for solving an individual's computer problems that show up with LR. It takes a lot of back and forth and trial and error to isolate a problem like yours.  While I think I can eventually identify your problem, I can not change your attitude.