The bug

If a warden gets angry at a pig, and said pig transforms into a zombified piglin before the warden can kill it, the warden will not remain angry at this zombified piglin and will need to become aggressive toward it a second time.

How to reproduce

1. Summon a pig
2. Summon a warden nearby
3. Have the warden get angry at the pig
4. After the warden roars, run the command

   /execute at @e[type=pig] run summon minecraft:lightning_bolt ~ ~ ~

Expected results

The warden would remain angry even when the targeted pig becomes a zombified piglin.

Actual results

It loses its target.