so i was using zombie kit in kitpvp and when i ate a gapple i got the extra hearts and the regen but i didn't lose the gapple. im not sure if it is on my side or the server's, but it should probably be patched because infinite gaps is op

W infinite gaps

you likely killed someone before you ate the gap. The extra gap didn’t appear due to a visual bug, but rendered in when you ate a gap, because that “updated” the stack and added the extra one, keeping the same amount of gaps as before. 

You can read my zombie guide at:

https://www.arch.mc/forum/threads/11878/kitpvp-kit-review-zombie/