That's how the original sprite is. I don't think there's anything to "fix".

Oh ok but i meant that Toby Fox has to fix it not wiki staff

Then you can try contacting them. However, I've heard there are many sprite inconsistencies in Undertale and Deltarune so I don't think it's going to get fixed.

I NOW HAVE MUCH ANGER

It looks like Susie is wearing boots with thicker soles in the Dark World.

Bruh why do all mods sound like theyre giving me the hardest glare of all time

I picture that every time someone replys to me with criticism or corrects me. (I don’t do well with criticism)