These blocks aren't waterlogged and they pop off instant if they are underwater in Java Edition. The blocks are Button, End Rod, Flower Pot, Lever, Mob Heads, Redstone Comparator and Redstone Repeater.
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Duplicate of MC-125351, this is asking for waterlogability/parity, but parity issues are not accepted if they predate buzy bees.
Thank you for your report!
However, this issue is Invalid.
You reported a parity issue. We are only tracking parity issues that meet the following criteria on this bug tracker:
The feature affected by the parity issue is present in both Bedrock Edition and Java Edition in the latest release or development version
The feature behaves differently in one edition than in the other
The parity issue was introduced in Buzzy Bees (Bedrock Edition 1.14 / Java Edition 1.15) or later and was not present before
Any parity issue that does not meet these criteria will not be tracked on the bug tracker and should instead be reported on the Feedback website.
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Unlike MC-125351, those pop underwater, so I don't think anything crazy like seeing air like in MC-125351 is happening