As you can see in the attachments (Photos), all the textures were incorrect, such as blocks rendered like "missing texture". Textures in the inventory is correct.
EDIT:
Checked the log and find "Unable to bake model". Don't know what caused this.
MC-137876
18w43b Minecraft Snapshot Texture error
Resolved
Duplicate
1
Thank you for your report!
However, this issue is a Duplicate of MC-137602.
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