You'll noticeTier: how much it should matter to you
3Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
AuthArea: what it touches
ImprovementsKind: in v2.1.251,
ImprovementsSection of the release
What
The de-duplication of in-flight 401 retries and token refreshes is now kept per API host instead of in one global map, so concurrent auth work for different hosts no longer interferes.
Evidence
cfe.of(W().host)
Strings lifted out of the shipped bundle, so the claim above can be checked against them.