PR #54207 fixed descriptor exhaustion for apps that never issued HTTP calls, but it inadvertently broke the sharing of Curl state between cloned/scoped clients. Any place that pre-creates lots of withOptions() variants before the first real request will now instantiate a separate CurlClientState per variant, leaking curl multi handles relative to previous releases. The fix restores state sharing so multiple clones can still point to the same CurlClientState while maintaining the “only allocate when someone actually sends a request” behavior.

That's the only thing I could think of that'd explain #62633

/cc @jwage can you give this a try?