Why do I have 2 iCloud drives on my PC with the same files?

I just ran into this the other day, which is perplexing, hilarous, horrifying, and confusing all at once.

And I really like this analysis from one of the commentors "Clearly the two folders are inextricably linked somehow in a parallel dimension involving a mesh of space-time, but unfortunately, all of these observations have yet to lead to a real solution."

Anyone know what's going on here? Fingers crossed that Apple doesn't destroy my data.