Mods
Fabric 1.20.1-0.16.0
BetterNether 9.0.10
Snowy Spirit 3.0.6

Issue
BetterNether chests do not render on Snowy Spirit sleds; they're invisible. Refer to the images below.

Normal chests

BetterNether chests

Steps to Reproduce

1. Install the mods listed above
2. Put the #c:wooden_chests item tag under the snowyspirit:sled_container tag (BetterNether lists its wooden chests under #c:wooden_chests) (I used KubeJS to achieve this)
3. Launch Minecraft and open/create a world, making sure that the C item tag is added to the Snowy Spirit one
4. Put a BetterNether chest on any sled

Other Notes
I tested this with BetterNether, Snowy Spirit, and KubeJS together. Apart from dependencies, no other mods were included.

I forgot to add that the same exact issue occurs with BetterEnd chests

latest.log
Also forgot to upload the latest log...