minecraft shields blocking does not display on lan

what i expected to happen was all players on the lan could see when other players were blocking
what actually happened was the host could see when people were blocking, but other players could not
to reproduce: 1: create lan world 2: log on someone else 3: give both players shields 4:have the non-host block, the host will see them block 5: have the host block, the non-host will not see them block