great!if you only add a static mesh, for the server there will be no obstacle, so what you will see is a sudden desync and warp of your character while trying to move through it (because for the client, that obstacle is present).
to make things look good, you have to also readjust the geodata in the server
unable to stepgreat!
If I put red squares, will the user be unable to step on them or attack other users through them?