run a freestyle job configured with an scm trigger using a kubenetes cloud agent template with the following trigger:

git

 
triggers

expected: 

job checks for changes every 5 minutes, but only triggers when changes have been checked in on a matching branch

actual: 

job triggers every 5 minutes and runs continuously even when there are no branches with active changes

note: when running the same job on a non-kubernetes based jenkins agent, the same build runs as expected (ie: job only triggers with actual changes are merged in the scm) so the issue likely pertains specifically to the kubernetes cloud agent template scenario

note 2: the scenario doesn't happen with the branch doesn't use pattern matching