When you're standing on a piston (the normal block, not the head) and it retracts, it will move you (sometimes off the piston). This also affects other entities and is maybe partly caused by MC-89262.
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Smells like MC-89030.
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@@unknown I'd say more like [MC-62440]
You can get the same result testing in 1.8.8 with arrows.
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MC-62440 is about pistons flickering.
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The pistons seem to actually disappear for a split second, causing entities to (temporary)1 glitch into them.
Upon retracting, an arrow shot on the top falls about the same distance it falls in a fence gate opened for 2 game ticks. (1.8.8 and 15w47c)
But it's hard to tell.
1 players get set back on top
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@@unknown: Oh, good spot. Please create a separate ticket for this (if there isn't one already).
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@@unknown @[An_yMiner] It may be a part of the cause, but it also pushes you off (always in the same direction). This is why I said it maybe was partly caused by MC-89262, because I thought that bug also included pistons.
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