[Missing/Black background] Sometimes scene is shown as sprites with just black/no background

### Original Report

Sometimes it seems like the background is just black with sprites on top. I think the OG version had a background there, but I haven’t double-checked with the OG game yet. Noticed this in the Outbreak chapter — after the first CG (both when the CGs are on or off in settings) when the sprites appear, the background is black. If you reload a save before the CG, the background is still black (even when it shouldn’t be), but after the CG plays, the background appears properly when it didn't before.

*More info provided later*

around here the CG appears and afterwards black bg when it probably shouldnt be
`Mion, be blunt with us, what's going on?! Has this virus really infected all of the villagers?`


Look at the scene rendering code around the Outbreak chapter, particularly after CG transitions. Check how background images are loaded and displayed when sprites appear. Reproduce the issue by playing through the specified line and reloading saves to see when the black background occurs.

Escrito por el modelo de indexación a partir del texto del issue.