Vines can be placed invisibly under leaf blocks
Update by [Mojang] Mega_Spud (Jay Wells):
Verification Builds:
1.2.6.2, 1.2.5.52 Retail
Summary:
Vines can be placed in a one-block space underneath leaf blocks, and will be invisible.
Steps to Reproduce:
- Stack two leaf blocks on the ground
- Break the lower leaf block
- Place a vine underneath the remaining leaf block
Observed Results:
An invisible vine block will be placed underneath the leaf block.
Expected Results:
Vines shouldn't be able to be placed underneath blocks, and they should never be invisible.
Screenshots/Videos attached: Yes
Notes:
Original Description:
Ivy invisible when it is laying on the ground in contact with a leaf of tree
To reproduce the bug, plant a tree (example oak) then give it bone powder then put ivy on the lower leaf (s) to a block of soil (Important !!) then put on floor .
Possibility to put under all the leaves has a block of the soil.
Created Issue:
Invisibility bug
Ivy invisible when it is laying on the ground in contact with a leaf of tree
To reproduce the bug, plant a tree (example oak) then give it bone powder then put ivy on the lower leaf (s) to a block of soil (Important !!) then put on floor .
Possibility to put under all the leaves has a block of the soil.
Invisibility bugVines can be placed invisibly under leaf blocks
Ivy invisible when it is laying on the ground in contact with a leaf of tree
To reproduce the bug, plant a tree (example oak) then give it bone powder then put ivy on the lower leaf (s) to a block of soil (Important !!) then put on floor .
Possibility to put under all the leaves has a block of the soil.
Update by [Mojang] Mega_Spud (Jay Wells):
Verification Builds:
1.2.6.2, 1.2.5.52 RetailSummary:
Vines can be placed in a one-block space underneath leaf blocks, and will be invisible.Steps to Reproduce:
- Stack two leaf blocks on the ground
- Break the lower leaf block
- Place a vine underneath the remaining leaf block
Observed Results:
An invisible vine block will be placed underneath the leaf block.Expected Results:
Vines shouldn't be able to be placed underneath blocks, and they should never be invisible.Screenshots/Videos attached: Yes
Notes:
Original Description:
Ivy invisible when it is laying on the ground in contact with a leaf of treeTo reproduce the bug, plant a tree (example oak) then give it bone powder then put ivy on the lower leaf (s) to a block of soil (Important !!) then put on floor .
Possibility to put under all the leaves has a block of the soil.
When vines spread in a one block area underneath leaf blocks, there is a chance of an invisible block being created next to it. This block has the hitbox of a normal sized block, but doesn't show anything. If any blocks nearby are broken, the invisible block will disappear. Pick blocking on it does reveal that it is a vine. This most likely relates to MCPE-29111, however you cannot place the invisible vine directly. When the block on top is not a leaf block, the vine will spread under the bottom of that block, but only when the area is one block high.
Steps to Reproduce
- Create a one block area for vines to spread. (where the top is leaf blocks)
- Place a block in the middle and a vine on the side of it.
- Set the random tick speed to a higher number
- Observe that occasionally an invisible vine will be created
Expected Result
Either this invisible block would not be created, or it would display a vine on the underside of the leaf blocks.

Updated title and description.
This bug has been reported to our internal bug tracker for further testing and a fix. It is scheduled to be fixed in one of the future updates (no specific date can be provided).
Reopened - this was fixed in the 1.2.10.1 BETA, but the fix wasn't included in 1.2.10.2.