Pufferfish placed on waterlogged halfslab triggers tripwire above when enemy aproaches it by enlarging its size.
This still works correctly in 1.14. until game is reloaded.
Reloading the game causes tripwire to detect smallest state of pufferfish, which is below water level. Pufferfish can not be therefore used as mob/player detector reliably.
When player (or other mob) aproaches bugged Pufferfish,it changes its size to medium and corrects tripwire output to none. Biggest state of Pufferfish still gives output as expected. (true)
To reproduce just build setup shown in attachment and reload the game. Pufferfish is placed above waterlogged halfslab with tripwire above it. Attachment shows false output given by tripwire upon reloading the game.
Linked issues
is duplicated by 4
MC-155757
Tripwire activates when shouldn't if you leave chunks.
Resolved
MC-158153
Pufferfish incorrectly collide with Blocks when newly spawned or World is reloaded
Resolved
MC-165079
Pufferfish hitbox broken
Resolved
MC-173377
Pufferfish can activate tripwire even when not intersecting string
Resolved
relates to 2
Attachments
Comments 6
This bug can also cause pufferfish to suffocate if their hitbox is pressed against a block or glitch through certain blocks like glass panes when the game is reloaded. From my testing, pufferfish appear to get a second, larger and invisible (to f3+b) hitbox when the game is reloaded or the pufferfish is newly spawned. If the pufferfish changes puff states once, this issue temporarily goes away.
probably related to MC-200906
Can confirm in 1.14.1-pre1.