Sleeping while holding a stack of slime blocks and facing certain items like chest, minecart with hopper, bed, ender chest, minecart, and minecart with furnace, the stack of slime blocks in hand will sometimes display behind those other items (see image). It can happen while holding 1-64 slimes in either hand.
Environment
Windows 10 Home 1803 build 17134.885; i7-7700; 24GB RAM; AMD Radeon RX 480; Java 8u211
This issue duplicates MC-9553.
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