5ea2be69ca
**Original Description:** > Service extensions are unable to handle requests when the isolate they were registered on is paused. The DevTools launcher logic was waiting for some service extension invocations to complete before advertising the already active DevTools instance, but when --start-paused was provided these requests would never complete, preventing users from using DevTools to resume the paused isolate. > > Fixes https://github.com/flutter/flutter/issues/126691 **Additional changes in this PR:** The failures listed in https://github.com/flutter/flutter/pull/128117 appear to be related to a shutdown race. It's possible for the test to complete while the tool is in the process of starting and advertising DevTools, so we need to perform a check of `_shutdown` in `FlutterResidentDevtoolsHandler` before advertising DevTools. Before the original fix, this check was being performed immediately after invoking the service extensions, which creates an asynchronous gap in execution. With #126698, the callsite of the service extensions was moved and the `_shutdown` check wasn't, allowing for the tool to attempt to advertise DevTools after the DevTools server had been cleaned up. --------- Co-authored-by: Zachary Anderson <zanderso@users.noreply.github.com>
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