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MC-134637

Comparators on slabs drop when loading them with structure blocks

The bug

When loading a structure with a comparator on a slab, and that comparator is updated after it is loaded, it will pop off if the block below it was air before the structure was loaded.

How to reproduce

Use the attached test world or the attached structure file to reproduce this issue.

Linked issues

Attachments

Comments 4

Please attach the structure file here so we can reproduce the issue.

I actually tried to reproduce it just now but it worked fine. Maybe it just affects particularly large structures.

Alright, I managed to reproduce this. This only seems to happen if one comparator tries to update another comparator while the structure is loaded, and the updated comparator is on a sandstone slab.

For this bug to occur, the block below where the updated comparator is loaded needs to be air before the structure is loaded.

I attached a test world and a structure for reproducing this issue.

Confirmed to be fixed.

Liu Chang Yao

(Unassigned)

Confirmed

Structures

comparator, structure_block

Minecraft 1.13, Minecraft 1.13.1, 1.14.4, 19w38b, 19w39a, ..., 20w16a, 20w17a, 20w18a, 20w19a, 20w20a

20w22a

Retrieved