Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SandboxArea: what it touches
Internal ChangesKind: in v2.1.251,
Internal ChangesSection of the release
What
Sandbox-related settings, including a weaker nested sandbox flag and network isolation and filesystem controls, are now resolved through a named lookup table rather than a simpler validating function. The table maps settings paths; it does not itself switch anything on.
Evidence
enableWeakerNestedSandbox
Strings lifted out of the shipped bundle, so the claim above can be checked against them.