This is not being in a boat, but rather standing on top of one!!! The other day I was messing around with creating elevators using the boat hitbox and discovered an issue which means that pistons cannot push boats that have other entities stack (not riding) on top of them. Using the current bug report system it is no longer possible to mark older versions as affected but this has existed since the introduction of pistons (see screenshots (Beta 1.7)).
The bug can be easily reproduced by activating a piston with a boat on it and then retrying but with a player standing on top of the boat. I have tested other entities and only the player seems to affect the issue. If you want my opinion of the cause (I have no coding expertise), just say so. Bubble Columns have a similar effect and are very strange. If you need a video for the bubble columns specifically I can conjure one up.
The first image in each sequence is of the setup, the second of the boat without player standing on top, and third with the player on top (the boat does not travel up and just gets stuck in piston head) The last Attachment is a proof that this exists in the newest pre-release of 1.16 (pre 5).
Related issues
Attachments
Comments
migrated
Bombs_Away_007
Someone Related this to boat stuttering, whilst they both involve a boat, and in discovering this one I noticed that too, this is a far more significant bug that physically stops boats from moving. It could be seen as related.
wobst.michael
Please check if this is still an issue in 1.17.1 or later.
Bombs_Away_007
Still present in 1.17.1, see attatched images for proof. Thanks for your time and the effort you put into this forum.
[media]
Bombs_Away_007
Still present in 1.18.2 see attatched images for visual evidence. Thanks for taking the time to fix this wonderful game.
[media]
Bombs_Away_007
Can confirm for 22w45a
[media]
Bombs_Away_007
Can confirm for 1.19.3
[Mod] Jingy
Can confirm in 23w42a