The Bug:

Wardens that are summoned as passengers instantly dismount their riders and begin digging.

This issue was not present in 1.19 Pre-release 1 and is caused by the fix of MC-250259.

Steps to Reproduce:

• Summon a warden riding any entity, for example, a cow.

• /summon minecraft:cow ~ ~ ~ {Passengers:[{id:"minecraft:warden"}]}

• Observe the behavior of the warden as soon as it's summoned.
• Take note as to whether or not wardens that are summoned as passengers instantly dismount their riders and begin digging.

Observed Behavior:

Wardens instantly dismount their riders and begin digging.

Expected Behavior:

Wardens would remain as passengers and not instantly dismount their riders and begin digging, just like in 1.19 Pre-release 1.