[1.12.2] BetterPortals Crashes with MrCrayFish's Furnature Mod mirrors. (Mod Incompatibility)

[EndsCreed]

Describe the bug
After installing this mod with MrCrayFish's Furnature mod (v6.3.0) and creating a nether portal, the mirrors now only reflect in the nether. The mirrors no longer work in the overworld and will crash the game when the chunk they are in is unloaded.

Although this isn't necessarily a BetterPortals issue, MrCrayFish's Furniture Mod did break when installing with yours. Adding a mention of this incompatibility would be nice!

Crash report
https://pastebin.com/ZjGciwLu

To Reproduce
If applicable, the steps to reproduce the behavior:

1. Install BetterPortals with Furnature Mod
2. Create a Nether portal and go through it at least once.
3. Go back to the overworld and place a mirror (Shouldn't reflect properly).
4. Teleport away from the mirror (Unloading the chunk).
5. Game should crash.

Screenshots

Please complete the following information:

• Minecraft Version: 1.12.2
• Mod Version: 0.3.7.7

Footnote
Due to this no being specifically an issue with BetterPortals, This is the related issue that I opened on MrCrayFish's Repo.
MrCrayfish/MrCrayfishFurnitureMod#677 (comment)