So I have noticed this for a little while now. Basically waiting for any AI champ to dash back, hold a sold block and then throwing a light attack in the air with your champ causes them to stand in place, holding block.
This AI exploit has severely devalued nightcrawler as a defender. Here is a video of my showcasing the bug and switching his stance multiple times without ever hitting him on his block. Also showcasing the same AI behavior vs a medusa. Would appreciate if you could resolve this situation. With the current state of AW, and an unduped NC being one of the very few liable defenders without a villain tag...it's important to keep his viability and prevent bugs like this affecting him.
https://youtu.be/Ky82jt0YQfA