Respawn/(re)login, client has you spawn one block down from server

when i login to my server, what appears to be happening is a disconnect between client and server, server gives spawn position of my character, which should tell it to stand on block A, what the client seems to be doing is taking block A and acting like i'm sitting at Block the block under block A, which is a problem for a bit when you have a latency issue, so for about a minute, i have to sit there until the server asks the client why my character is sitting one block below(or in case of my one block floors, running from downstairs back to upstairs) so there is some fighting and my character gets moved around a bit, i've managed to solve this problem automatically, if i quickly upon logging port myself up by one) basically client is trying to use different reference point for ground then server somehow..idk, i know i can't be the only person in using this setup to experience this (or more people are but don't see it as much as they are not halfway around the world from their server, as i am at the moment)[this should not happen regardless of amount of lag or internet connection speed] (for instance, if I'm standing on a second floor of single height, when i first log in for the first 10 seconds or so, i'll be standing on the floor below, type of block doesn't matter. i've intentionally set my spawn-point one block higher via command and it solves the issue, when i die, at least, logging back in has same effect(Again, block i was standing on doesn't matter)