Mechanics Trace's activation timing

[DrPumpkinz]

What type of bug are you reporting? Mechanics

What is the bug?
Tracing Mold Breaker activates Mold Breaker before tracing Mold Breaker

https://replay.pokemonshowdown.com/gen9ou-2063321140

Are you able to replicate it? If so, how?
Literally just trace Mold Breaker

 

[DaWoblefet]

This happens with Trace for lots of different Abilities.

 

[Irpachuza]

This seems to keep happening, for example with Intimidate. Seems relevant enough to get a small bump.
https://replay.pokemonshowdown.com/gen9randomdoublesbattle-2382442162 (turn 6)

 

[space.bass]

https://replay.pokemonshowdown.com/gen9randombattle-2403395502

here it is again, with frisk

 

[Hydrametr0nice]

https://github.com/smogon/pokemon-showdown/pull/11282