It looks like overheating more generally which can let ghosting appear more strongly. Do you perhaps have the part cooling fan blowing from only one side?
It also looks like your infill is showing through. Are you by chance using Cura? By default it prints infill before the walls, which results in the infill showing through. You may want to change to print the inner walls first, followed by external walls, and then finally the infill. This will give the best external wall quality. If the infill still shows through you can adjust the infill overlap.