Can confirm in 26.1 Snapshot 2
It's ridiculous that they'd rather pick up banners than a crossbow when empty-handed.
Can confirm in 26.1-snapshot-2
This bug also explains why the spear‘s Jab attack when used by mobs cannot pierce and damage multiple targets.
I think this works as intended.
Already fixed in 26.1 Snapshot 1
Already fixed in 26.1-snapshot-1
Zombies and Husks share this issue, but it is particularly illogical for Zombified Piglins. Given that the Drowned, another undead mob, behaves correctly in the same situation, the inconsistency is evident.
Already fixed in 26.1-snapshot-1
I guess this explains why they attack Wither Skeletons that are supposed to be teammates(via the /team command).