I have the following Jenkins Pipeline job:

• Build Trigger: "Poll SCM"
• Parametrized with String parameter "BRANCH", default value "master"
• Definition is "Pipeline script from SCM" with Branch Specifier "$BRANCH", "Lightweight checkout" unchecked

Expected behaviour:
The job polls SCM. When changes are detected in the branch specified in the default value of the BRANCH parameter ("master" in this case), the job is triggered.

Actual behaviour:
The job polls SCM, but it ONLY triggers the job when changes are detected in the branch that was last built.

This causes the following issue:
After I manually trigger the job with branch "develop", subsequent changes in branch "master" are ignored.

This issue also manifests itself when Build Trigger: "Build when a change is pushed to BitBucket" is used.

This seems to be a regression of issue https://issues.jenkins-ci.org/browse/JENKINS-27327