Just while we’re sort of on the topic of these black screen bugs, thought I’d mention something that I only saw on my last playthrough. When jumping down the hole in the Whispering Depths, I got a black screen but it wasn’t quite the same as it still gave me the icons down at the bottom left that you normally get in dialogue, including the one to switch characters that I could pick to refocus on my main character and continue.
Not sure whether anyone else has seen this either here or elsewhere. Or whether it’s a variation on the black screen bug or something else entirely.