I'm using version 1.5.36 on my Paper 1.21.8 server.
When piglins approach stacked gold ingots, they only take one ingot at a time, even if they are not stacked.
I noticed that when piglins pick up ingots at the same time, only one of them actually get one. The others just canceled their actions and made no further attempts.

Then I disabled gold ingot stacking and reloaded the plugin, piglins instantly took all gold ingots.
I'm using version 1.5.36 on my Paper 1.21.8 server.
When piglins approach stacked gold ingots, they only take one ingot at a time, even if they are not stacked.
I noticed that when piglins pick up ingots at the same time, only one of them actually get one. The others just canceled their actions and made no further attempts.
Then I disabled gold ingot stacking and reloaded the plugin, piglins instantly took all gold ingots.