MC-163978

Mobs can spawn on moving blocks (block 36)

The bug

Mobs can spawn on moving blocks, (i.e., blocks pushed by pistons), even if they should not be able to spawn on these blocks.

Video

https://www.youtube.com/watch?v=lW9Bk-U3vGY

To reproduce

A structure file that can be used to reproduce this issue has been attached to this ticket.

Status:Unresolved

Reporter:Robot

Created:2019-10-17, 03:27 PM

Updated:2024-12-09, 08:44 AM

Votes:37

Watchers:21

Confirmation Status:Confirmed

Mojang Priority:Low

Category:Mob spawning

Labels:block, mob, spawn

Affects Versions:

1.14.4 - 1.21.4

1.14.4, 19w42a, 1.15 Pre-release 1, 1.15 Pre-Release 2, 1.15 Pre-release 3, 1.15 Pre-release 4, 1.15 Pre-release 5, 1.15 Pre-release 6, 1.15 Pre-release 7, 1.15, 1.15.1, 1.15.1 Pre-release 1, 1.15.2 Pre-Release 1, 1.15.2, 20w06a, 20w07a, 20w08a, 20w10a, 20w11a, 20w17a, 20w18a, 20w20b, 20w21a, 1.16 Pre-release 1, 1.16 Pre-release 2, 1.16 Pre-release 3, 1.16 Pre-release 4, 1.16 Pre-release 5, 1.16 Pre-release 6, 1.16 Pre-release 7, 1.16 Pre-release 8, 1.16 Release Candidate 1, 1.16, 1.16.1, 20w28a, 20w30a, 1.16.2 Pre-release 1, 1.16.2 Pre-release 3, 1.16.2, 1.16.3 Release Candidate 1, 1.16.3, 1.16.4, 20w45a, 20w46a, 20w48a, 20w49a, 20w51a, 21w08b, 21w11a, 21w15a, 1.17 Pre-release 1, 1.17 Release Candidate 1, 1.17.1, 21w37a, 1.18.1, 22w05a, 1.18.2, 22w11a, 22w14a, 1.19, 1.19.2, 1.19.3 Pre-release 3, 1.19.3, 1.19.4, 1.20 Pre-release 1, 1.20 Pre-release 6, 1.20, 1.20.1 Release Candidate 1, 1.20.1, 23w33a, 1.20.2 Pre-release 1, 1.20.2, 23w42a, 1.20.4, 24w07a, 1.20.6, 24w20a, 1.21.1, 24w38a, 1.21.3, 1.21.4

Fix Versions:-