What is it they say? God moves in mysterious ways - for an agnostic, I think, this translates to: so does nature!
Good for you, that it wasn't the first flowering, though, as that would have left you in uncertainity, whether it was a genetic fault, all the way to the next blooming.
Maybe it suffered by the last half years social distancing - or maybe it's an act of defiant solidarity with those of us, who mourn RBG, and especially the fact, that she lost the battle against cancer this side of the current presidency!
No, seriously, sometimes it's possible to find a cultural explanation for these abnormalities; sometimes it's my feeling, that chance is the only explanation, I can come up with!