I'm not sure this is a regression, at least how I use it - you can hit control + o to expand, and usually the commands it runs show the file path(s) it's using, and I'm really paranoid with it, and I didn't even notice this change.
i've never had to use control + o before but with the latest changes, i give Opus a simple task that should take a few seconds and it's like "used 15k tokens" and "thinking" for three minutes with absolutely zero indication or visibility as to what it's actually doing and i have to ESC ESC it to stop and ask what the FUCK are you actually doing claude?
Or, it decided it needs to get API documentation out and spends tens of thousands of tokens fetching every file in a repo with separate tool use instead of reading the documentation.
Profitable, if you are charging for token usage, I suspect.
But I’m reaching the point where I can’t recommend claude to people who are interesting in skeptically trying it out, because of the default model.