The Bug
when you place multiple vines/glow lichen in one block it only drops one when mined, whereas if you place (for example) multiple sea pickles/candles in the same block it drops the correct amount.
This may be due to the fact that the Vines/Glow Lichen loot table does not account for blockstates
NOTE: this is not a duplicate of MC-173493 as this contains more information and steps to reproduce
Steps to reproduce
Grab 2 Vines/Glow Lichen and some Shears
Place 2 Vines/Glow Lichen within the same block
Mine them with the shears
- ❌ Notice how it drops 1 even though you placed 2
Duplicate of both MC-212125 and MC-123140