2 Hoppers funneling unstackable items into a 3rd Hopper at the same time cause the 3rd Hopper to not funnel items into a container

I think it's back in Snapshot 13w10a

in the picture is the Large Chest empty and in the hoppers are potions.

Unable to reproduce.
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Sorry
tested in SP only
stays in this state after reloading the map and happens again too.
stays in this state after restarting game and happens again too.

What I expected to happen was
-Potions get sucked out Brewing Stand and go through all hoppers to the Chest.

What actually happened was
-3 Potions out of a hopper cart into the 8 vertical Hoppers rows (at the same time)
-Potions get stuck in the horizontal hopper-line

Pictures show test-setup (last picture shows hoppers in stuck position)

only happens with non stackable items so far.

Alright could confirm. I placed Minecarts into 2 chests with Hoppers underneath. 1 Hopper gets unpowered 2 ticks later than the other which causes the Hopper in the middle to clog up, screenshot attached.

I'm unable to reproduce, but I think it's because I indirectly fixed this when I fixed MC-11019 , so I'm marking it as resolved.