Immersive Portals: True Immersion

1.0.20: More performance tweaks, and a couple fixes.

1.0.14: Fixed some performance issues and cut lag on monster pathfinding. 

1.0.9: Fixed an internal license mismatch.

1.0.7: Patched to allow loading when the following are present:
connectivity-1.20.1-7.6
valkyrienskies-120-2.4.11
These mods can now load together with Immersive Portals: True Immersion, though in-game features are currently untested.

Immersive Portals: True Immersion expands the idea behind Immersive Portals by making portals behave
less like magical barriers and more like actual doorways between locations and dimensions.
The goal is to make interactions relatively seamless.

Immersive Portals already allows you to see and travel between dimensions without a traditional loading screen. True Immersion takes that concept further by allowing more of the world to interact naturally through portals.

With this mod installed, entities and effects on opposite sides of a portal are no longer completely isolated from one another.

Features

• Mobs can detect and chase through portals

• Endermen can become aggressive through portals when a player makes eye contact

• Players and mobs can attack through portals

• Projectiles can pass through portals

• Explosions can travel through portals

• Chests and other containers can be accessed through portals

• Liquids can flow through portals

• Particles can be viewed through portals

• Liquids can travel through portals (not water to nether).

The goal is simple: make portals feel less like portals and more like relatively seamless connections between two physical spaces.

This mod is still a work in progress, and is likely to produce bugs or unexpected behavior. 
If you run into any of these, let me know in the comments and I'll do my best to patch it as soon as I can.
If you require further compatibility, let me know the mod and I'll see what I can do.

Some compatibilities: 
Ars Nouveau:

projectile, ray, and touch can pass through portals.

Carryon mod:

Chests and entities can be picked up, dropped, or carried through portals.

Requirements

• Minecraft Forge 1.20.1 or NeoForge 1.21.1

• Immersive Portals