That's.... very much a limit of the AI. I might be speaking for the creator a bit, but this is just what I have noticed after several hours of tinkering with the worlds, the AIs, prompts, and how AI context works. Genuinely, there's a few things that can happen, 1 is just that the AI ignores the descriptions of the stats, 2 might be that AI using "Rolling Window" or "Truncated Middle" for context Overflow (IE more data present than the AI can handle) and the AI just starts throwing data out, and inadvertantly throws out the fact that you had the trait, especially if you use Rolling Context, where unless you are specifically telling the AI you have X trait every other passage 9Most rolling windows only have a 2k Context limit) the AI will completely forget you have X trait. Or it could just be that the AI doesn't see the trait as important or have an effect on the story, and again, it just throws it out or ignores it.
There are limits to the AI, but in this case traits are never passed to the model. Using devtools to check the network request sent to chat completions, it shows all of the information that gets sent to the AI. As of 1.0.3, it sends the system prompt and however much of your story that fits in the context limit you set. For me this was set to 64k (model supports up to 128k), but setting it to 1k reduces the information sent to just the system prompt and latest action, so the system prompt isn't being thrown out. I'm sure it wouldn't be handled as consistently if the story context grew to outweigh the system prompt, but that's a separate issue inherent to how messages are weighted. The issue here is just that traits aren't included in the system prompt, so the AI never knows they exist to begin with. Adding "<TRAITS DESCRIPTION>" to the system prompt, similar to how world data and stat descriptions are handled doesn't add any trait information, so there's presumably no code to support it.