It does move forward a little. But it's so minimal I doubt they'd care after sending you a replacement figure already. Mine has a messed up cape where the right side wasn't inserted into the shirt correctly. I'm just going to try and fix it myself somehow.
We'll see, I just messaged them.
Be careful fixing the cape, the cape is fed through plastic groove pieces glued to the sculpt. I know this because when I dunked the first one that broke it was soft enough to stretch the shirt out that I could see how the cape is glued on.
Really be patient, the space between the space of the groove is tiny and extremely tight, you could rip the cape where it attaches. Hopefully you have spare supermen, if it's the only one..I'd skip it.