I was using the "create scene beat" prompt, and then I switched to the prompts configuration to change something with the models used for my prompt. When I returned, the little menu stating [ Apply | Retry | Discard | Model name ] where there, but the text was black (aka applied) and not blue-ish. I deleted the whole text, but the little context menu was still there. I checked the console and found this error, probably related:

"Could not find AI mark range, has the text been deleted?"

I went back to the prompts, back to write, and started a new text generation, and the lost context menu disappeared again, so it's not a big deal. Just a minor UI bug.