Observed behavior: When TNT is dispensed underwater, it damages players around it unless their feet are behind blocks – just like above the water.
Expected behavior: TNT underwater does no damage to players.
This is inconsistent with the behavior from Bedrock Edition which was marked Works As Intended in MCPE-21611 – and has no similar reports on Java indicating WAI, thus I believe it's a bug.
Linked issues
duplicates 1
Comments 2
Thank you for your report!
We're tracking this issue in MC-26279, so this ticket is being resolved and linked as a duplicate.
That ticket has already been resolved as working as intended, which means this is not considered a bug and won't be fixed. Please do not leave a comment on the linked ticket.
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Duplicate of MC-26279, this behavior predates the busy bees update(s), so it it not a valid parity report.