Post Client Flow Service Callouts running in Async...

jallen-fni

It appears as of yesterday or today that Post Client Flow execution of Service Callouts is running Async even with a <Response> element as part of the policy configuration.

Definition of the policy:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ServiceCallout async="false" continueOnError="false" enabled="true" name="SC-***-async-external-api">
  <DisplayName>SC-***-async-external-api</DisplayName>
  <Properties/>
  <Request clearPayload="true" variable="sc.request"/>
  <Response>sc.response</Response>
  <HTTPTargetConnection>
    <Properties/>
    <URL>https://{hostname}/{api}</URL>
  </HTTPTargetConnection>
</ServiceCallout>

Output from Debug Trace:

This runs as part of a Post Client Flow and has been working fine up until maybe yesterday 4/4/2024. Looking at the Apigee Release notes on March 29th there is this note in the Fixed Bugs:

237656263

Resolved issue with async mode in the ServiceCallout policy when the <Response> element is removed.

But this appears to either have broken it more, or not completely fixed the issue. Any help here would be greatly appreciated.

Post Client Flow Service Callouts running in Async even with <Response> element