Expected Behavior:
Mob is dismounted to an adjacent block from the cart
Observed Behavior:
Mob is ejected inside the cart
Steps to reproduce:
1. Launch version 1.21 Pre Release 2, put a creeper in a minecart kill the cart and see where the creeper is put after killing the cart.
2. Launch version 1.20.2 or below and repeat the same steps and see the creeper goes to different positions
Results of the bug:
This breaks almost all cart based contraptions like villager based trading halls, cannons, and mobs farms.
Linked issues
Attachments
Comments 8
Can confirm in 1.21 pre-1 and 1.21 pre-2,
This issue is very important cus it breaks all vehicle-passenger related contraption that technical minecraft community has designed over the years, and it breaks most of them fundamentally cus most of them rely on the cart dismounting its passenger specifically not on a rail block, as it is very hard to get a mob from a rail in a controllable manner (without causing entity cramming in entity holding chambers etc).
Thank you for your report!
We're tracking this issue in MC-266123, 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.
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This isn't a duplicate, MC-266123 is about Minecarts checking for colliding blocks upon dismount and placing entities at the position of the cart if there are no valid positions found, this behaviour is expected in the context of MC-266123.
The actual issue being presented in this report is the minecart dismounting entities inside the position of the minecart regardless of whether the blocks around are valid locations. The minecart should first check for valid positions in a 3x3 radius around the cart before dismounting at the position of the cart which is not mentioned in MC-266123.
this does NOT fundamentally break cart tech , activator rails still exsist and use the same dismount logic. infact no other controlling entity uses dismount logic , all riders and passengers are dropped exactly where controlling entity died or got removed. most contraptions will be easily fixable by using activator rails or a piston to push the mob etc.
Can confirm that this has been an issue since 1.20.3. Due to experimental features in 1.19.4 many servers have not even bothered updating to 1.20 and so this seems to have gone completely unoticed by most servers. This would break shulker farms, villager trading halls, pretty much any contraption that handles mobs and animals using minecarts because if they are always dismounted on the rails they would not pathfind properly or block the rail causing carts to jam. It is imperative that this behaviour is fixed.