How to reproduce:
1. Open the attached project
2. Open the "Main.unity" scene
3. Enter Play Mode
4. Open the Scene view (make sure the chunk is visible in it)
5. Select "World/+0001+0001.chk" gameObject in the hierarchy

Actual result: "Error assigning texarray texture to 2D texture property '_MainTex': Dimensions must match" error gets spammed in the Console.
Expected result: No errors are thrown in the Console.

Reproducible with: 2019.2.0a10, 2019.1.0b8, 2018.3.11f1.

Notes:
The errors are thrown only if the GameObject is visible in Scene view and selected in the Hierarchy.

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Fixed in 2019.3.0a8.