It could be coming from infill being printed before perimeters. Try unchecking "Infill Before Walls" under "Infill" and see if that makes a difference. You probably need to add that setting and you can do that by hovering over the "Infill" header and clicking the little icon that pops up to the right.
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bagel-orb 61
Those yellow parts are simply top/bottom skin infill. Are the skin settings the same across both cura versions?
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