Grab bug doesn't get much more prominent than that
https://clips.twitch.tv/IncredulousPreciousCobraDeIlluminati
I don't think this one can get waved off as "latency" so easily.
Comments
It is latency though, that combined with the game giving Survivors time to counter the grab by adding needless and multiple input checks.
Killer clicks M1, the game checks to see if the Survivor is interacting with an object. If found so, Killer is then teleported into position and grab animation starts. THEN the game does yet ANOTHER check to see if the Survivor is still interacting with an object. If so you get a grab, if not then the grab fails even though it already started the grab animations.
Iv seen and myself had this "bug" happen many, many times since the game launched. Everything from minor hitches of being teleported then a forced attack, who might or might not be a hit, to being stuck and locked in place for several seconds. Iv also had grabs push me into WALLS and get stuck inside.
That pic was posted on July, 29, 2016. If this hasn't been fixed since being in when the game launched it isn't going to get fixed at all without reworking net code. And no, dedicated servers aren't going to fix this either. Just likely make it more common