Macbook Pro 16" and Thunderbolt 27" Display

That screen is not "washed out", it is missing its Green components. Blue looks good, Red looks good, no Green anywhere.

Your have a sample of one. That is certainly Bad Luck, but it is not yet a Trend. You could easily have been disconnected by accident.

Thanks, Mr. Science. It was not an accidental disconnect. As I said, I asked a technical question and was given the support link and the chat was ended.

Thanks. I'll give that a try next time it happens.

I have the same setup and the same issue. I have contacted Apple support to register my +1. What I did find was changing my display brightness from a magic keyboard woke up the Thunderbolt display. Since I am using the gigabit ethernet port on the display it is really annoying having to replug the adapter - so I am glad for this work around.

Same issue for me... the MacBook Pro doesn't recognize that it has the display connected to it (LG UltraFine 5K Display). This is usually when it wakes from an extended sleep. I have to restart the MacBook Pro, disconnecting and reconnecting the cable doesn't seem to help. It is connected via the Thunderbolt 3 cable that came with the display (uses one cable to charge and feed video). I have the display set as my primary display with menu and the MacBook Pro is the secondary display. Prior to this display I had the original Apple Thunderbolt Display that I connected with an adapter. Same thing was happening, so I thought it was the display and adapter, which is why I purchased the new display. I also changed the cable to the shorter Apple Thunderbolt cable because the LG supplied cable was too long. I did contact Tech Support and let them know what was going on. I have a case number now. Base on what I read and the suggestions they made (resetting SMC, PRAM, new user, etc), I knew it would not fix the actual issue. Waiting on a software/firmware fix.