Can not be reproduced on Snapshot version 1.15 pre-release 2
Could not reproduce the bug as described in the ticket
Created a setup similar to the screenshot, went away and in two instances the fish was dead when I came back. Corpse was at the edges of the room in both scenarios.
Fish corpse was not next to the door in one of the instances, and was adjacent to stone blocks and not the glass wall.
Is this intended behavior for
/gamerule mobGriefing
as the block is not destroyed or removed?