You were talking about lesbian action. Lesbian action usually does not include a dude.
Plus in the image they both have their backs turned to you and they're literally running away from you towards the bedrooms.
You are trying way too hard to make this something it is not. "literally running away from you" Come on man, should the artist have them walking backwards.
It doesn't matter, you have or will fuck them both. If you have a harem of 20 women and they sometimes sleep with each other that's a turn on, not a turn off, as a man you just aren't wired to feel jealous if women have sex with each other.
If a guy see's another guy with a hot girl he may be jealous, if a guy see's 2 lesbians he hopes to join in.
Not sure what he changed on the back end, but in this update I encountered multiple instances like that. Where a character prompted me to do something, and in traveling to do it, another chapter popped up for an unrelated cut scene. It never locked me out of anything, but I don't recall ever experiencing that in previous versions.
There are multiple stories in the game, what may have happened is you did something that would cause more than one story element to happen.
You could be on your way to meet Mia but Eriks mom is waiting downstairs.