Blocks can be placed on the chain, which should not be placed on them

Summary:
Blocks can be placed on the chain, which should not be placed on them.
Vines can also be generated on chains in mineshafts in lush caves.

List of affected blocks:

• Vine
• Ladder
• Fire
• Twisting vine (MCPE-104718)
• Weeping vine (MCPE-104718)

Steps to reproduce:

1. Place chains.
2. Try to place the above blocks on the chain.

Observed results:
The above blocks can be placed on chains.

Expected results:
The above blocks will not be placed on chains.

Image: