When a mine cart with a hopper passes by the top of a hopper it does not transfer the items. Also if you place items in a hopper the items just stay there it does not transfer the items.
Comments 3
It sounds like your hopper may be powered. Powering a hopper disables it. Please check whether it is powered, or if you aren’t sure please attach a screenshot or video of the hopper that is not working.
Cleaning up old tickets: This ticket had been set to 'Awaiting Response', but has not received a response from the reporter (~3 months+) so is being closed as Incomplete. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines which includes steps to reproduce the problem.
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the same thing happened to me, but it was in version 1.16.1 ...