Boosting a cart while it stood still on a slope, can boost it (visually) into a chest when powering the powered track(No, that's not a chestcart in the image)
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[media]
Please do not mark unreleased versions as affected. You do not have access to this yet.
Ah, I'm sorry, I thought of the weekly snapshot as a future 1.5 release, and since there is no real 1.5 release, that would be a logical conclusion.
This ticket has been marked as a duplicate of MC-8004, in favor of the better description/information provided.