It may not be a bug, it could be a setting in the OpenGL, but so far I have not found it. If it turn out to be, then I will close the issue. Any ideas?

I went to github to download the 469c version, I could not find it where did you see this version?Feralidragon wrote: ↑Wed Sep 15, 2021 6:23 pm It's likely one of the bugs with the light atlas in OpenGL (the light atlas is something new introduced in 469b OpenGL, to speed up rendering performance relative to lightmaps).
And in all likelihood it's fixed in the 469c version, considering that other bugs were fixed there as well (such as flushing).
So you can either request access to it in the OldUnreal forum or discord, or as a quick test to validate if this is indeed the case, you can disable the atlas in OpenGL: open the UnrealTournament.ini, and look for the setting with "Atlas" in its name, and just set it to false and check again.