At a Marvel vs. Capcom panel during San Diego Comic-Con, Capcom producer Yoshinori Ono revealed that the developers are improving Chun-Li and some other unspecified Capcom character models. According to Ono:
"The development team is hard at work finishing the game for the September 19 release date, and based off the feedback we heard, we are currently making improvements to Chun-Li as well as other Capcom characters. Since the work is still in progress, we dont have anything final to show you just yet, but stay tuned."
https://www.gamespot.com/articles/marvel-vs-capcom-infinites-weird-looking-chun-li-w/1100-6451961/