Unclear It is not clear what the extra layer does or whether it changes which commands are allowed.
What
Before running a shell command, Claude Code checks whether it may run it. The sandbox is an isolated area that limits what commands can touch. When the sandbox is on and the command is not excluded from it, that check now runs inside an extra layer instead of directly. A new helper that decides whether to allow the command runs inside the same layer.
Why
This may change how the permission check and the sandbox work together.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
It is not clear what the extra layer does or whether it changes which commands are allowed.