What Can't Fable Do?

I'm curious, has anyone encountered scenarios where Fable wasn't able to solve a problem, fix a bug, complete some task, etc. outside of the (questionable) restrictions in place? Every conversation I read about Fable devolves into either two conclusions: (1) Fable is insane and was able to do X in one or two prompts or fix issues that other models and humans had been grinding on for a while or (2) Fable sucks because my prompt triggered the guardrails. But I haven't seen much of "Fable wasn't able to do X" and in my work so far I haven't seen it really fail or mess up much at all.