You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
SDKArea: what it touches
Bug FixesKind: in v2.1.248,
Bug FixesSection of the release
What
Starting with a session ID that is already in use now exits with the machine-readable code session_in_use alongside the message, so SDK and wrapper callers can tell this apart from other startup failures. The message you see is unchanged.
Evidence
session_in_use
Strings lifted out of the shipped bundle, so the claim above can be checked against them.