What i expected to happen was for my skin to load in as a Slim Model and the skin I chose.
What actually happened was my skin was the model I ended up having was a classic. When I tried changing it again to a different skin it wouldn't.
Steps to Reproduce:
1. Changing the skin before you play.
2. Load into any server or world.
3. skin doesn't pop up as the slim model/ It won't change back to the skin you chose either.
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Having a similar issue. I've created a very descriptive and in-depth ticket as to the issue here; MC-180551