Incorrect trust policy behavior for pull requests from forks in cloudbees-bitbucket-branch-source

Multibranch Pipelines with Bitbucket branch source can be configured to discover pull requests from forks. The trust policy is set to "Forks in the same account" by default. In cloudbees-bitbucket-branch-source 866.vdea7dcd3008e and earlier, except 848.850.v6aa2a234ac81, this trust policy allows...