The bug
Minecart sounds are not being displayed when using subtitles. This is the case with hopper and regular minecarts for sure.
Linked issues
blocks 1
is duplicated by 5
Attachments
Comments 18
Please reopen this ticket instead of trying to merge it into a completely different, unrelated issue's ticket.
Can confirm in 1.20.2. Also, the subtitle appears only when the minecart as placed, as noted in the first two duplicate bug reports.
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However, this issue is Working as Intended.
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How is this a duplicate if players clearly can't ride inside of hopper minecarts?