Not sure (yet) who main culprit is, so adding both plugins.

Current scenario is a multi-job setup, but since LAST_TRIGGERED_JOB_NAME comes from parameterized-trigger, adding them as well.

When using env vars (ex: LAST_TRIGGERED_JOB_NAME) if the JOB_NAME is in a folder, rather than replace "/" with underscore, the name that gets derived is anything after that trailing slash.
So if there's "Folder_A/Job_A" and "Folder_B/Job_A" there's going to be a problem if the value that LAST_TRIGGERED_JOB_NAME is returning is "Job_A".