Hard crash in Infinity Dungeon EX

Partner Rank: 1

Verification build: 1.16.100.60
Regression build: 1.16.100.59

Summary: Hard crash in Infinity Dungeon EX

Impact: Renders world unplayable which can result in bad reviews and unplayable product, refunds and more. Infinity Dungeon is a popular Realms + title.

Repro:

1. Download Infinity Dungeon EX from marketplace Create Game Take shovel from chest 1671, 92, 1313
2. break clay blocks at 1674, 92, 1324 & 1672, 92, 1312 & 1672, 93, 1311(edited)
3. go into room that opens up after the clay is gone take infinity core out of chest 1671, 95, 1302
4. open chest @1671, 92, 1297 and remove ender pear
5. toss ender pearl
6. close client
7. open client

 
Observed result: 3/5 attempts

Most of the time it hard crashes with an assert. If it doesn't crash, throw ender pearl again and close/open the game.

assert:

--------------------------- Assert Failure - ctrl+C to copy this message to the clipboard! --------------------------- Assertion failed: You should access a valid chest Condition is false: low Function: ChestBlockActor::getItem in f:\darwinwork\1662\s\handheld\src\common\world\level\block\actor\chestblockactor.cpp @ 79 ---------------------------

Expected result: The game should not crash.

Screenshot above.

Notes:

Sometimes it will crash just when throwing the pearl and you dont even need to close and open.