piglins do not pick up gold when mob griefing is set to false
to recreate
Set /gamerule mobGriefing false
Travel to the Nether, since piglins turn into zombie pigmen if in the Overworld
Spawn several piglins, and change to survival mode without wearing any gold armor
Drop a gold item (e.g. Gold Ingot) on the ground.
Spawn wither skeletons nearby, open containers, break blocks of gold, or attack one of the piglins and observe their behavior.
I know it says resolved in java but it is still an issue in bedrock
Comments 2
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Are you referring to MC-172530?
The change to Java was to stop them from standing in one spot staring at the gold indefinitely and not performing any of their other AI (like attacking players). They don't pick it up.
I tested in Bedrock and they don't appear to ignore other events (they will attack a player without gold armour) and will ignore the gold ingot, exactly as they do on Java.
Unless I've misunderstood your report this is Working as Intended.