I've never seen the host dropped at an SSPX chapel, but I've seen it dropped twice at the local FSSP parish, the last one being two weeks ago at the FSSP parish. I usually attend the SSPX now, but I was hoping that the FFSP might have some Epiphany water left (they didn't). I saw an odd thing, though, after the host was dropped and immєdιαtely picked up. This is what happened. Probably some here won't believe it though.
Just as I was waiting at the head of the line for communion on the left side of the sanctuary, the priest attempted to give communion to the person kneeling at the altar rail just in front of me, when he dropped the host. The priest motioned the communicant (a man) to move aside while the priest picked up the host from the floor. I think he picked it up with a napkin, but I couldn't see it exactly, and then the priest left another napkin on the floor where the host had been. I kneeled for communion just to the left of it and glanced at the napkin on the floor to my right and then saw an odd sight. On the the corner of the napkin, on the left side, was a bright red color, a spot about the size of a dime, or a little bigger, though it was more like a half-circle. I thought that was a bit odd. Maybe the color (which looked like blood) was already there for some reason? I don't think I imagined it. There's probably a reasonable explanation for it.
Anyway, the reason for the increased dropping of hosts could be due to the priest being worried about touching the communicant's tongue, due to CÖVÌD safety protocols, or something like that.