[Skullcatrons]

Wherever you click on a skill that popped into chat-box, it wipes the entire chat history right there and present you new entry screen as well giving you description of the skill.

Reproduction:

Simply click on any skills used in combat.

It will wipe the chat-log.

[Neus]

I can't replicate this.

Was this during or after you participating in an event, possibly with skills that had special styling?