This is like the 20th post about this. Can't you guys just... read one of the other topics before you create another one, only thing you're doing here is spamming. That's all. They know it's broken and they will fix it. It's not game breaking or anything. Also, given the fact that the bug was introduced on Friday, today's Monday, around lunch at Poland and even developers probably don't work during weekends, it's madness to want the fix now. There was no time to create it.
Also, it doesn't really need a hotfix. It may be a little bit complicated, but it's doable and not really tim consuming to work around the bug. And it's not like you create mutagnes all that often. I mean you can, but do you really need to? No, you don't.