Assert "Invalid handle unwrap" when opening Infinity Skyblock

Partner Rank: 4

Verification build: 1.15.0.51 3706814

Summary: Assert "Invalid handle unwrap" when opening Infinity Skyblock

Impact: Asserts are bad and can result in failures during cert and content review if they're not caught and logged. While there is no apparent gameplay impact, it's clear there is something going wrong under the hood.

Repro:

1. Download Infinity Skyblock from the store.
2. Create a new world with the Infinity Skyblock template.

Observed result: Assert shown

Expected result: No assert
Screenshots attached: Yes, above