[MC-44718] Double chests unlocking

The bug

When a double chest is placed and both sides of the chest have a Lock tag, it stays locked. When one side is unlocked, the entire chest is still locked.

How to reproduce

Place down a double chest.
Run this command on both chests:
```
/data merge block x y z {Lock:"Test"}
```
Try to open the chest (should be locked)
Run this command on ONE side of the double chest:
```
/data merge block x y z {Lock:""}
```
Try to open the chest again (stays locked)

Linked issues

is duplicated by 1

MC-72925 Clearing {data tag} string ineffective Resolved

relates to 1

MC-110862 Lock of double chest is set when player tries to open chest and is based on direction Resolved

Attachments

MC-44718.mp4

Comments 19

Mary Mary 2014-01-14T03:42:14Z

A double chest is two tile entities next to each other, this needs some big-time programming on Mojang's part. So, not exactly a bug, but more a design flaw...

Mary Mary 2014-01-14T03:44:03Z

Clear the lock on both sides, then. Tile entities can only be in one block, not two.

Manuel Gwosdz 2014-01-14T13:02:24Z

@Mary Mary The Problem with your solution is that when one Chest Tile Entity is locked next to another one, the other one also becomes locked. So you unlock one and the next tick it is locked again.

Torabi 2014-02-28T16:34:12Z

Actually, double chests are kind of an ugly hack, and it is definitely possible for multiple blocks to use the same tile entity.

user-f2760 2014-04-30T20:09:07Z

@Jar_ the lock has been introduced in the 1.8 snapshots, not 1.7

9 more comments

Deleted account 2014-04-30T20:36:01Z

Sorry, forgot to update the version in my comment. Edited it, thank you.

galaxy_2alex 2014-10-30T20:43:51Z

Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases. If this has been done, we can reopen the issue.

Keep in mind that the "Resolved"-Status on this ticket just means "Answered", and that we are waiting for further information on whether this issue still exists or not. We will reopen it as soon as the requested information has been delivered.

marcono1234 2016-11-27T18:05:41Z

Sorry for creating unnecessary report updated messages. This is probably intended. If both parts of the double chest would keep their lock you might get strange results such as you could open the chest when clicking on the left but not the right part. There is a different bug that the way the Lock and CustomName is based on direction. I will create a report for that.

Oval 2018-10-02T04:53:42Z

Confirmed for 1.13.1.

PneuX 2019-06-07T22:17:23Z

It's now (1.14.3 pre-release2) possible to unlock a double_chest:

If only one of sides has been lock, unlock the side lock is sufficient to unlock two sides.
Open double_chest (by aiming right or left) requires password before unlock.

If each part of double_chest has been lock with the same password, it's necessary to unlock each side of double_chest to unlock two sides.
Open double_chest (by aiming right or left) requires password before unlock.

If each part of double_chest has been lock with different password, it's necessary to unlock each side of double_chest to unlock two sides.
Open double_chest (by aiming right or left) isn't possible before unlock.

user-2a4c8 2019-10-02T16:07:56Z

19w40a