Bug after zombie crawls towards u after going over a fence

[KouhaiSan]

As in the title, the zombie crawls towards you and pushes you away/stuns you/makes u fall down. Problem is, 

-player clicks to atack, then the zombie pushes him away before finishing a hit. after the push, player character continues the atack without player input. It results in the player (me a lot of  times) being s, unable to move during the atack, just like shown on the video

ve, dying in a result