The Bug
When placing Paintings or Items frames on Honey Blocks and then moving the Honey Block, the Paintings or Item Frames fails to pop-off and treats the piston arm as a full block

Replicate

• Make a Honey Block be able to move back and forth via Sticky Piston
• Place Paintings or Item Frames on the sides of the Honey Block
• Place a lever to move the Sticky Piston
• Flick the lever to move Honey Block