Weird health drop going up stairs

I’ve been building a toiwer out of staircases and half-slabs, and it’s about as tall as I need it to be. Like the report from July 2nd about “stairs of death,” I’ve noticed that my health drops a little bit every time I turn the corner going up. The screen shot is taken from the next-to-last landing, and going up and turning left is what makes it happen. It might happen at the other landings as well. I had some serious health drops while building the thing, and I didn’t fall. It came from crossing the risers in Shift mode to avoid falling. My HP bar was full when I started, and I seem to have lost about 40%.