When Season 2 just launched, people have quickly discovered a fairly amusing bug revolving to one of the legacy mechanics. Typically, when Anna uses her slap, the female characters have a special interaction where they can retaliate by slapping her back.
However, with Season 2, male characters could also join in on this interaction, leading to some hilariously uncharacteristic animations.
However, it didn't take long for people to discover that the rabbit hole goes much deeper. As it turns out, Anna can fully swap movesets with her opponent, allowing them to use all of Anna's moves while she copies theirs.
In a vacuum, it's honestly a rather amusing bug for someone to find, and there's already dozens of videos and clips with people utilizing it in creative ways. However, we are not in a vacuum, and it just serves as another unfortunate reminder of how rough Season 2 has been so far.
The "emergency" patch is still set to release sometime later this month, whether they will address this issue, or only cover more game breaking issues remains to be seen.