The bug
Slime blocks and honey blocks appear to be fully transparent while being moved with a piston. The smaller inner cube is missing while the block is moved.
Linked issues
is cloned by 1
Attachments
Comments
violine1101
tryashtar
This was fixed at some point
Can confirm, affects slime blocks as well. Unsure whether this might be intended due to a technical limitation, however I couldn't find an older ticket for this.