Mobs fail to pathfind around blocks with non-full top when under low ceiling
The bug
Mobs cannot pathfind correctly in certain situations.
They would get stuck trying to pass through a <2 block gap.
Note that they can perform the same task correctly when the block is replaced with something with a full top, but still transparent (e.g. top slab).
Further testing suggested that sometimes this still happens even if the block is removed entirely.
To reproduce
- Open the attached world MC-196548.zip
and watch the behavior of the villager attempting to pathfind to a workstation.
Observed Result
The villager gets stuck attempting to pathfind between the stairs and the low ceiling.
Expected Result
The villager would recognize it as an invalid path and turn around.
Created Issue:
Mobs failed to pathfind around blocks with non-full top when under low-ceiling
[See attachment]
Mobs cannot pathfind correctly in certain situations.
They would get stuck trying to pass through a <2 block gap.
Note that they can perform the same task correctly when the block is replaced with something with a full top, but still transparent (e.g. top slab).
[See attachment]
Mobs cannot pathfind correctly in certain situations.
They would get stuck trying to pass through a <2 block gap.
Note that they can perform the same task correctly when the block is replaced with something with a full top, but still transparent (e.g. top slab).Further testing suggests that sometimes this still happens even if the block is removed entirely
[See attachment]
Mobs cannot pathfind correctly in certain situations.
They would get stuck trying to pass through a <2 block gap.
Note that they can perform the same task correctly when the block is replaced with something with a full top, but still transparent (e.g. top slab).Further testing suggests that sometimes this still happens even if the block is removed entirely.
[See attachment]
Mobs cannot pathfind correctly in certain situations.
They would get stuck trying to pass through a <2 block gap.
Note that they can perform the same task correctly when the block is replaced with something with a full top, but still transparent (e.g. top slab).Further testing suggest
sthat sometimes this still happens even if the block is removed entirely.[See attachment]
Mobs cannot pathfind correctly in certain situations.
They would get stuck trying to pass through a <2 block gap.
Note that they can perform the same task correctly when the block is replaced with something with a full top, but still transparent (e.g. top slab).Further testing suggested that sometimes this still happens even if the block is removed entirely.
is duplicated by
is duplicated by
Mobs failedto pathfind around blocks with non-full top when under low-ceilingMobs fail to pathfind around blocks with non-full top when under low ceiling
[See attachment]
Mobs cannot pathfind correctly in certain situations.
They would get stuck trying to pass through a <2 block gap.
Note that they can perform the same task correctly when the block is replaced with something with a full top, but still transparent (e.g. top slab).
Further testing suggested that sometimes this still happens even if the block is removed entirely.The bug
Mobs cannot pathfind correctly in certain situations.
They would get stuck trying to pass through a <2 block gap.
Note that they can perform the same task correctly when the block is replaced with something with a full top, but still transparent (e.g. top slab).Further testing suggested that sometimes this still happens even if the block is removed entirely.
To reproduce
- Open the attached world MC-196548.zip
and watch the behavior of the villager attempting to pathfind to a workstation.
Observed Result
The villager gets stuck attempting to pathfind between the stairs and the low ceiling.
Expected Result
The villager would recognize it as an invalid path and turn around.
Duplicate of MC-196548.
Thank you for your report!
We're tracking this issue in MC-196548, so this ticket is being resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
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📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki
– I am a bot. This action was performed automatically! The ticket was resolved by one of our moderators, and I left this message to give more information to you.
Duplicate of MC-196548
Thank you for your report!
We're tracking this issue in MC-196548, so this ticket is being resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature to see if the issue has already been mentioned.
Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki
– I am a bot. This action was performed automatically! The ticket was resolved by one of our moderators, and I left this message to give more information to you.







Can confirm in 1.17.1.
Can confirm in 21w37a.
Villagers show similar behaviour when standing under low hanging leave blocks but wanting to pahtfind up solid blocks.
Can confirm in 21w42a.
This appears to have been fixed in 22w42a. Can anyone still reproduce this issue in said snapshot or 22w43a?