Major Server Lag/Glitches/Bugs on Creative servers.

Your username:SafaryDoesMC
In which minigame/server does the bug occur: Creative/ Plots 1
Detailed description of bug: I was building on my plot, then I started to randomly teleport back and fourth, while the world was deleting the blocks i placed in the past 5 seconds. If I try to place the blocks back, the world deleted that block, along with maximum of 2 blocks underneath that block. This may have to fixed very soon as this is extremely annoying after a while. I would also like to point out, that my friend is getting the same "Lag" so nobody can say that I just have a slow computer or anything.