[MC-116921] source_entity advancement trigger condition exists twice

The bug

It looks like the source_entity advancement trigger condition exists twice:

"conditions": {
    "damage": {
        "source_entity": { },
        "type": {
            "source_entity": { }
        }
    }
}

Attachments

source_entity_test.zip

Comments 2

Uriel Salischiker 2018-10-02T20:23:56Z

Is this still a issue in the latest version of the game(currently 1.13.1)?

If so, please add it to the affected versions, thanks!

BugTracker_ 2026-03-07T12:29:32Z

This is still an issue as of 1.21.11, this can be confirmed via datapacks:

[media]

How to Reproduce

/summon skeleton ~ ~ ~3

Let it attack you, test A + B will trigger

/advancement revoke @s everything

Get blown up by a creeper, test D triggers, C does not

Clarification

If Test C never triggers under any circumstance, it proves both source_entity fields check the same entity, making the condition impossible (nothing can be both a skeleton and a creeper simultaneously). That's the definitive proof the fields are duplicated and redundant.