This is a picture I took on an A319
I circled the fairing to show you, the line is Horizontal not vertically on the fairing
This is small however and doesn’t need to be fixed quick, just something I wanted to point out.
Ok it looks like airbus may have tweeked the A320 a bit.
Perhaps the newer models are a little different compared to the old ones?
Or it’s just the type of model
Just googleing A320 wing view, half seem to have it the way IF has it and some have it the way you pointed out. It doesn’t seem like too big of a deal as the way in IF is still correct.