DISABLE_UNENROLLMENT feature flag does not hide unenroll option in LMS Course Card

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I’m using Tutor v20.0.0 and trying to disable unenrollment for learners using the DISABLE_UNENROLLMENT feature flag.

Here’s the plugin code I added:

from tutor import hooks 

hooks.Filters.ENV_PATCHES.add_items([
    ("openedx-lms-common-settings", "FEATURES['DISABLE_UNENROLLMENT'] = True"),
    ("openedx-cms-common-settings", "FEATURES['DISABLE_UNENROLLMENT'] = True"),
])

Observed behavior:

• The unenroll option is still visible on the learner’s dashboard.

• When I click it, the unenrollment feedback screen still shows up.

• However, if I try to submit the unenrollment, it gets blocked (so the flag is partially working).

Expected behavior:

• The unenroll dropdown and feedback option should be hidden/disabled for learners when DISABLE_UNENROLLMENT = True.

Questions:

1. Am I missing an additional step in the configuration?

2. Has this feature flag been deprecated or replaced in MFE?