My feeling (totally unproven) is that in the drive to make Sonnet 3.7 more "agentic", they've lost some of its ability to actually just stick to what you asked it to do. It seems that it "wants" (I know, it's not sentient!) to be more in the driver's seat now.
Definitely can be very annoying if you do just want it to execute on a set of instructions.
I don't know but if it wants to be in the driver seat, maybe it can pay the subscription fee for itself, because it is barely usable for anything I paid for before.
To me it's not a good deal that I pay for something that makes up the things it wants, and completely disregards what I asked. It's like the recipe for the worst SaaS you ever used.
Definitely can be very annoying if you do just want it to execute on a set of instructions.