Wither Skeletons' pathfinding is broken when their NBT is updated every tick

The bug

Originally I had a data pack but I narrowed down to 3 commands with 2 being ran every tick.

First command:

scoreboard objectives add Health dummy

Repeating command block:

execute as @e[type=minecraft:wither_skeleton,sort=nearest] store result score @s Health run data get entity @s Health 1

Chain command block attached to the repeating one:

execute as @e[type=minecraft:wither_skeleton,sort=nearest] store result entity @s Health float 1 run scoreboard players get @s Health

The Wither Skeleton stops being able to get to the survival mode player when those 2 commands are active.
This didn't effect Zombies.
I didn't try other mobs.

I asked people to confirm that this is not only happening on my Windows 10 PC.
And it appears to be a bug in the code instead of my installation.

How to reproduce

1. Enter the following command into a powered, repeating command block:

   data merge entity @e[type=wither_skeleton,limit=1,sort=nearest] {Test:0}

2. Spawn a wither skeleton:

   /summon wither_skeleton

3. Switch to survival mode:

   /gamemode survival

   → The wither skeleton has trouble pathfinding to you