Katarina

Over the past 2 weeks, three times tried to kill Katarina, three times there was a crash on stage 1 or 3, after which all the portals disappeared. A lot of people have the same problem, it is not clear whether it is possible to kill Katarina at all. Please fix this.

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Fixed a client and instance crash that could occur within the Catarina, Mastermind boss fight.

They should have fixed that in this last patch. FYI, this would be a bug report not a suggestion.