What
A tool call is a single action Claude takes, such as reading a file or running a command. Every tool call now runs a cleanup step once it finishes, whether it succeeded or failed.
Why
This is internal behavior. It gives each tool call a fixed point where leftover state can be tidied up.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
The finding does not say what the cleanup step actually does.