Whilst playing on my corruption world on classic mode I was working on clearing some corruption near the base when I noticed some crimson enemies spawning overhead on my arena. I am finding this very odd as this is specifically a corrupt world. After a bit of googling the most I can come up with is that this can happen if someone brings crimson to a corrupt world. Which is all find and dandy except this is a private world, I keep everything stored in my original world and have zero resources or anything stored in this one. I mainly come to this one for farming hardmode enemies since I don't want to push my original world into hardmode just yet (as the og world is on expert).

Is this a normal bug or issue? I mean sure I can just kill the enemies but if this also means that there is now crimson hidden away somewhere in my corruption world well that just makes it more interesting for me.

I've also created new worlds in search of a damn aglet and in one of those worlds not thirty seconds after I spawned into the fresh world the slime king spawned.

Ah for added bonus info: I am playing Terraria on my xbox with live services and internet connectivity turned on. Fun fact on that, if you generally play games offline with xbox you can download your games and updates from gamepass, then the day before gamepass is to expire disable your internet to your xbox and viola now you can continue playing your gamepass games offline. How long this lasts according to xbox's support page should only be 30 days before a check-in is required. I however have gone since July and am still gaming offline.