Fable 5 degraded performance

I was using Fable 5 to plan out some long running benchmark testing and going back and forth between chat and Claude Code (desktop) to plan the process out. One aspect of the schema design code flagged and chat gave me a direction on. I pasted that response to code and when I came back to chat, chat was rewriting the brief, the message I had copied in to code was gone, and their recommendation was the complete opposite of what I had just copy and pasted into code. Chat gaslighted me for a bit even denying that I had gotten that message from it when I pasted it back into the chat. Started trying to find out if something was running simultaneously and went to file a probably pointless support ticket and saw this alert.

So if you’re noticing some messages disappearing or other fishy behavior this could be it.