The bug
When placing a boat on blocks whose outline boxes are taller than their collision boxes (such as soul sand, snow layers, and honey blocks), the boat is spawned on the top of the outline box and falls down to the collision box. This is unlike spawn eggs, which spawn mobs directly on the collision box.
To reproduce
Place a block that has different outline and collision heights (such as soul sand, snow layers or honey blocks)
Place a boat on top of the block
❌ The boat appears to sink into the block.
Related issues
Attachments
Comments
migrated
migrated
same on snow layers and half slabs
z-fighting with chest, water
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related to [MC-92555]
migrated
@@unknown I don't think it's really related to that. This issue has more to do with the boat that shouldn't go down.
migrated
Not sure whether to call this fixed or not. The block isn't visible anymore (due to other changes), but the boat still sinks into the block. Also, the repeater is still visible. (1.9-pre1 and 1.9-pre2).
bemoty
Can confirm for MC 1.12.1.
marcono1234
Is this issue describing the same bug like MC-101334?
migrated
@@unknown No this one concerns vertical collision and is not about the size of the collision box.
TheGabro
affects 20w22a
migrated
Confirmed in 1.16-pre5. However, soulsand and snow layers are no longer visible on the surface of the boat (repeaters and comparators still are) - see this screenshot.
Sonicwave
I made some clarifications to the report; the "sinking" behavior appears to be caused by the boat being spawned too high, rather than sinking into the block more than other entities would (as can be seen if you show hitboxes and spawn a boat and creeper on top of honey blocks). I've also removed the part about repeaters since boats don't/no longer sink into them.
Avoma
Can confirm in 20w51a.
Avoma
Can confirm in 21w03a.
Avoma
Can confirm in 21w05b.
Mask3D_WOLF
Requesting ownership as the current reporter is inactive
Avoma
Can confirm in 21w06a. Video attached.
Avoma
Can confirm in 21w07a.
Avoma
Can confirm in 1.16.5 and 21w08b.
Avoma
Can confirm in 21w11a.
Avoma
Can confirm in 21w16a.
Avoma
Can confirm in 21w17a.
Avoma
Can confirm in 1.17.
Avoma
Can confirm in 1.18.2.
Avoma
Can confirm in 1.19.2.
migrated
Can confirm in 23w03a.
sof
Can confirm in 1.21.3. Also looking to request ownership to maintain the report.