Is there an existing issue for this?

• I have searched the existing issues

Observed behaviour

Summon Quicksand has a few issues:

1. Dropped items are destroyed after a short time in the Quicksand area
2. If a Scroll of Summon Quicksand is placed in a Dispenser and then triggered to fire, the server crashes (Crashlog included). On rejoining the game, you see Quicksand blocks as if it had fired.
3. When casting Summon Quicksand from a Wand, the area affected is random (sometimes a straight line, sometimes adjacent blocks).

Expected behaviour

I expected the following:

1. Dropped items or blocks to be unaffected (they cannot suffocate). This should duplicate what happens when a item is dropped into quicksand normally. When the spell wears off, the item should appear on top of the quicksand.
2. Scrolls of Summon Quicksand should be able to fire from dispensers without crashing the server
3. The area of effect should be consistent (the targeted square and the four blocks with sides adjacent to it, total of 5 blocks)

Steps to reproduce

Issue 1:

1. Join a Server
2. Use Summon Quicksand from a Wand
3. Drop a Iron Sword into the Quicksand
4. Sword disappears after tumbling a few times

Issue 2:

1. Place a Scroll of Summon Quicksand into a dispenser
2. Trigger the dispenser (by tripwire, lever, etc)
3. Server crashes

Issue 3:

1. Cast Summon Quicksand from a Wand on a block in front of you and observe the area of effect
2. Wait for it to wear off and recast it on the same place
3. Note how the area of effect is different

Crashlog

https://gist.github.com/KnightCa/b7eb3f3c8746677020a671833abf4e3e

Environment (Singleplayer/Server, etc.)

Issue present on both sides

Mod version

1.5.10

Forge version

1.12.2-forge-14.23.5.2860

Other mods

No response