Zoglins can't infect Villagers

The Bug

I think Zoglin's full name is Zombified Hoglin, so I think who R able 2 infect(感染) Villagers in2 Zombie Villagers. The truth isn't so, however.

How to Produce?

2 get a comparation, I'll upload 2 videoz.

1st, Watch the 1st 1.

I used a specific cmd 2 let Villagers attack ZP by Evocation Fangs. &, of course, ZP attacked back & infected that Villager.

Then watch the 2nd 1.

Apparently the Zoglin killed the Villager but didn't infect who.

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If this is a feature, close this as Invalid or WAI. If so, try 2 fix it. If none, solve as other results and contact me.