Should we drop this bug from the errata? This bug still repros and what I checked with the PR in comment#1 is not merged.
Tested on below version: openshift v3.6.173.0.164 kubernetes v1.6.1+5115d708d7 Follow the steps Jan provided, the pod using configmap mounted by subpath has been deleted immediately.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2019:0792