[MCPE-12501] Minecarts with hoppers have texture z-fighting (or y-fighting?)

When you put a hopper in a minecart you see this. See photos attached.

Linked issues

migrated 2016-01-26T00:22:26Z

Confirmed on Samsung Galaxy Note 5. Android 5.1.1 Version: 0.14.0 Beta 1

migrated 2016-01-30T06:50:55Z

Confirmed on Sony Xperia Z3, Android 5.1.1, MCPE version 0.14.0 build 3

migrated 2016-01-31T16:38:09Z

Confirmed on Prestigio Multipad 4 Diamond 7.85 3G. Android 4.2.2 Version: 0.14.0 Beta 3

migrated 2016-02-03T03:42:32Z

Fixed in 0.14.0 build 4.

migrated 2016-06-03T20:47:23Z

Reopening as it affects 0.15.0 build 1 (See new photos attached)

migrated 2016-06-11T05:21:52Z

Fixed again in 0.15.0 build 3

migrated 2016-06-15T00:37:01Z

Reopening as it affects 0.15.1 now

Adrian Östergård 2016-08-25T09:57:41Z

Reported for test and fix.