This is a reoccurring glitch/bug that has to do with mobile bridging, in treasure wars and sky wars, this happened on the NA region.
The bug has to do with mobile bridging,(where you sprint forwards at jittertap to place blocks.) when I was bridging, the blocks were disappearing under my feet. Its like I would be jittertapping, the blocks wouldn’t be placing, however you would still hear the noise of the blocks being placed. (I restarted my iPad, this changed nothing.)
I use the newest version of minecraft, and play on iOS iPad with my hands(no controller or keyboard or mouse.)
I couldn’t get any screenshots of the bug, sorry.