Jurassic Depths: Cutscene unplayable due to issue with wither damage

Verification builds: Release 1064482
Summary: Two of the temple cutscenes in Jurassic Depths fail due to a wither taking damage, spawning wither skeletons, and dying.

Impact: Impossible to progress the map.

Repro Steps:
1. Download Jurassic Depths and open the world
2. Enable cheats
3. /tp @s 4069 16 3860
4. /give @s flint_and_steel 1 0 {"can_place_on":{"blocks":["netherrack"]}}
5. Light the netherrack on fire and wait several moments until a bossbar appears at the top of the screen

Observed Results: Bossbar begins quickly decreasing, indicating the wither is taking damage. After a few seconds, large animals (wither skeletons) spawn, and following that the wither dies. It is now impossible to continue.

Expected Results: Wither remains healthy and the player can right-click to begin the cutscene.

Screenshots/Videos attached: https://streamable.com/93njf

Notes: This issue was not the case in public 1.5. I am not personally familiar with the wither behaviors used, but can notify and answer any questions about it.