Jenkins stash unstash issue not cleaned from previous runs

Jenkins is caching stash'ed files and not cleaning up.
Git commit renamed files from .yaml to .yml exposing this problem.

Base cloned directory tree (partial) Stashing from this:
./workspace/tools/infrastructure/plays/roles/mdc-etcd/tasks
./workspace/tools/infrastructure/plays/roles/mdc-etcd/tasks/wipe.yml
./workspace/tools/infrastructure/plays/roles/mdc-etcd/tasks/start.yml
./workspace/tools/infrastructure/plays/roles/mdc-etcd/tasks/check.yml
./workspace/tools/infrastructure/plays/roles/mdc-etcd/tasks/setup.yml
./workspace/tools/infrastructure/plays/roles/mdc-etcd/tasks/stop.yml
./workspace/tools/infrastructure/plays/roles/mdc-etcd/tasks/main.yml

Unstashed onto another node (retrieved from jenkins node but shows up on remote node too).
./workspace@2/tools/infrastructure/plays/roles/mdc-etcd/tasks
./workspace@2/tools/infrastructure/plays/roles/mdc-etcd/tasks/wipe.yml
./workspace@2/tools/infrastructure/plays/roles/mdc-etcd/tasks/start.yaml
./workspace@2/tools/infrastructure/plays/roles/mdc-etcd/tasks/start.yml
./workspace@2/tools/infrastructure/plays/roles/mdc-etcd/tasks/wipe.yaml
./workspace@2/tools/infrastructure/plays/roles/mdc-etcd/tasks/setup.yaml
./workspace@2/tools/infrastructure/plays/roles/mdc-etcd/tasks/check.yml
./workspace@2/tools/infrastructure/plays/roles/mdc-etcd/tasks/setup.yml
./workspace@2/tools/infrastructure/plays/roles/mdc-etcd/tasks/stop.yaml
./workspace@2/tools/infrastructure/plays/roles/mdc-etcd/tasks/stop.yml
./workspace@2/tools/infrastructure/plays/roles/mdc-etcd/tasks/main.yml