I upgraded to the new 2.1.0 release of the HipChat plugin and am now seeing messages like "HIPCHAT_CHANGES_OR_CAUSE is not supported in this context" when attempting commands like the following in a Jenkinsfile (multibranch pipeline):

hipchatSend(message: '${CHANGES_OR_CAUSE}', room: 'Some Room')

Note that this example uses the existing (now deprecated) CHANGES_OR_CAUSE template, not its HIPCHAT_CHANGES_OR_CAUSE replacement. This same sort of error happens for several other new templates as well, such as BUILD_DURATION, COMMIT_MESSAGE, and HIPCHAT_CHANGES.

Additionally, the DURATION template is now rendering as "0 ms" regardless of actual duration.

These messages were working as expected with the 2.0.0 version, aside from the "and counting" issue I logged as JENKINS-40461.

Is there something new that must be done to support these particular templates in a Jenkinsfile/pipeline build, as of 2.1.0, or is this a regression?