Flickering and moving shadows when camera moves. (Bug with lighting channels)

As you can see on the video above, whenever I move around the camera in editor, or “in-game” when I hit the “play” button, I get some weird flickering and moving dark spots.

I tried to tweak my light sources, but nothing helped. Then I selected the wall, to see if I could maybe play around with it’s lighting parameters… and before I did anything, the problem disappeared. Just from selecting the wall.
Edit: It’s still happening “in-game” though.

I thought it might be somehow connected to the issue I encountered a little while ago in the same spot: Weirdest lighting bug out of nowhere - Rendering - Epic Developer Community Forums
I thought I solved it, but after looking around more thoroughly, I found that at some viewing angles the same thing still appears briefly, flickering in and out of existence. This is very annoying and ruins my scene - I wanted to make a camera doing a fly-by, demonstrating everything, but whenever I move through the scene, the flickering that I mentioned starts happening.

It only goes away if I disable all the lighting channels on light sources, beside the Channel 0. But I need to have Channel 0 and Channel 1 enabled, because otherwise the torch shaft wouldn’t be lit correctly (the shaft is using Channel 1 so that it won’t cast a huge and ugly blob shadow on the ground from the light source directly above it).

I don’t know what else to do. I even tried to update the engine to the latest version and launching the copy of my scene there, but the flickering still happens.

My conclusion: something about lighting channels is bugged. Because if I disable everything except Channel 0, all the bugs are gone.

Hello,

We’ve recently made a switch to a new bug reporting method using a more structured form. Please visit the link below for more details and report the issue using the new Bug Submission Form. Feel free to continue to use this thread for community discussion around the issue.

https://epicsupport.force.com/unrealengine/s/

Thanks

Thank you, I will post my report there!