Chunk loading in 1.16.100 is glitchy

When loading chunks it is possible that changes made during or briefly before the load are not visible for some but are for others. An example: someone in my world had built something small and asked me to tp and come see it. I teleported to them and there was nothing there. They were standing on the build but to me it looked like they were standing on air. When I tried to stand on it, i simply fell through as if nothing were there, on his screen i was glitching up and down