Describe the bug (Required)
When in survival mode, attempting to hurt a hidebehind does no damage to it and instead deals a heart of damage to the player. This has occurred consistently and I have not yet been able to kill one at all.

To Reproduce (Required unless not known)
Steps to reproduce the behavior:

1. Spawn hidebehind
2. attempt to harm it
3. Pain

Log output/error (if present)
N/A

Expected behavior (Required)
I should have been able to deal damage and kill the hidebehind

Screenshots
N/A

Versions:

• Forge Version: 1.16.5-forge-36.1.16
• MC Version: 1.16.5
• Mod Version: 1.16.5-2.0.1

Additional context
This is taking place in a modpack I am making. Because I know that mods often conflict with one another, here is a list of the mods I am using:

jei (BETA)
polymorph (BETA)
enhanced visuals (creativecore)
itemzoom rekindled
spice of life
first aid
campfire overhaul (BETA)
total darkness
appleskin
Apotheosis (Placebo)
areas (collective)
cosmetic armor reworked
better drowning (Bookshelf)
configured (BETA)
catalogued
wall-jump!
titles
not enough crashes
FTB chunks (FTB library)
elenai dodge 2
personality
just enough resources
Optifine
fps reducer
fastfurnace (Placebo)
fastworkbench (Placebo)
AI improvement
performant
better biome blend
clumps
dynamic surroundings (BETA)
soundfilters
serene seasons (BETA)
survive (unionlib)
itemphysic lite
snow under trees
HT's treechop
falling leaves
cycle paintings (collective)
classical art
passable foliage
armor underwear (carrots library)
ensorcellation (CoFHcore)
Jousting
random village names
disenchanting
BYG
upstream
Darker depths (BGcore)
bettercaves (mineshaft) (strongholds) (save my stronghold) (better portals) (extras) (API)
better end (patchouli) (BETA)
dungeon crawl
valhelsia structures (BETA)
towers of the wilds
stoneholm (cloth)
terra incognita (cunieform)
endergetic
infernal expansion
spiders 2.0
whisperwoods
stalker creeper
Mowzie's mobs
Mystical world
wyrmroost
Creatures and beasts (Geckolib)
guard villagers
rats (citadel)
weeping angels
genetic animals (beta)
Horse genetics
big brain
geode
pandora's creatures
bag of yurting
reliquary
quark (autoreglib)
quark oddities
upgrade aquatic
Buzzier bees
abnormals berry good
abnormals delight
abnormals savage and ravage
inspirations (mantle)
brazier
relics
bountiful (Kotlin)
supplementaries
tetra (mgui)
colt's cosmetic armor
tetranomicon
undergarden tetra patch
tetra pak
majobroom
mining helmet
decorative blocks
decorative blocks modded compat
decorative winter
farmer's delight (beta)
farmer's delight int
macaw's fences
embellishcraft (mapperbase)
small ships
astikorCarts
Create
gauges and switches
redstone pen
essentials
astral sorcery (observerlib)
astrological sorcery
mana and artifice (Gecko lib)
Eidolon
druidcraft
blood magic (ALPHA)
botania
mahou tsukai
Twilightforest
undergarden (BETA)
abyss chater 2

This is intentional. The hidebehind is unable to attack you so it retaliates and does not accept the damage. You will have to wait until night or if the area is dark to attack it.