Weird Outline

Hello! So recently I just downloaded the Wynntils mod and my friend's outline is really weird. His armour has a yellow outline but only the armour. His character has no outline. Its really annyoing me and I have no idea what to do. I restart minecraft multipe times but it doesnt change. With vanilla minecraft the outline is working good.

 

could be that your friend's using the slim model and it's messing with the glow?

 

My guess would be it’s the translucent 2nd layer of the skin that’s messing it up

 

I dont think so bc when in playing with lunar its working good. But it could be the problem, ty for your idea.

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The slim model isnt the problem, i am using slim model too but my outline is normal for him. I mean it could be. Today ima ask him to change skins for a min. Ty for your ide.