problem: unloding minecart whith chests is not posible.
reason: The detectorrail emits an redstone signal to the hopper which prevents unloding and detecting content of the chest at the same time.
example solution: make so that the hopper is not affected by the redston signal from the detector rail
i know this is not tecnicly a bug but it prevents this function.
i apologise for any gramtical issue of the text.
Duplicate of MC-13052 - If you have not, please use the search function in the future, to see if your bug has already been submitted. If you could not find the original report, please comment with the keywords you searched for.
Also please do not mark reports as affecting future versions, as you could not have tested those.