Summary:
In Java 1.20.3, the texture of the Monster Spawner in the inventory began to have back sides. The same applies to new blocks - Vault and Trial Spawner. They also have back sides, which creates a parity issue and slight graphical differences between editions.

Steps to reproduce:

1. Search in creative inventory or give yourself Vault, Trial Spawner and Monster Spawner.
2. Look how it look in your inventory.

Observed results:
The back sides of Vault, Trial Spawner and Monster Spawner are not visible in inventory.

Expected results:
The sides will be visible, as in Java.

Screenshots:
java 1.20.2

java 24w13a

bedrock 1.20.80.24