Magma blocks damage entities through thin blocks, such as lecterns and snow layers

The bug

When placing a lectern on top of a magma block, and standing close to the lectern, the player will receive damage due to the magma block. This also works with other thin blocks such as snow layers and carpets.

To reproduce

• Place a magma block
• Place a lectern on top of it
• Stand closer to the lectern

Observed result

The player will take damage.