Hey, this is a known bug in 2.6.11 that’s specific to Editor Classic mode. Chat history doesn’t respond to clicks.
Workaround: click the double-arrow icon in the top-right corner of the chat panel. This will switch the view out of Editor Classic. After that, chat history should work again.
More details in similar threads:
The team is aware of the issue. Let me know if the workaround helped.