Mobs without natural fire resistance cannot pathfind through lava

The bug

Mobs without natural fire resistance which are swimming in lava cannot pathfind. You can see that they recognize their target, for example vindicators raise their axe, but they don't move at all. This does not apply to zombified piglins, wither skeletons, and blazes.

Reproduction steps

1. Create a 1 block deep pool of lava
2. Summon a Wither Skeleton in the lava and switch to Survival
   The Wither Skeleton slowly moved towards you; as expected
3. Summon a Vindicator with fire resistance in the lava

   /summon minecraft:vindicator ~ ~ ~ {active_effects:[{duration:-1,amplifier:0b,id:"minecraft:fire_resistance"}]} 

   The Vindicator repeatedly raises its arms for a short time but is unable to move towards you