Hide discussion tab not working

May be hiding discussion tab is not working?
I have set FEATURES[‘ALLOW_HIDING_DISCUSSION_TAB’] = True, but the hide icon is not present yet. I’m trying maple, tutor, version 13.2.2. It used to work in Ironwood.
Anybody else is experiencing the same problem?

It is working for me with the following plugin.

from tutor import hooks


Thanks @uetuluk!!!
My mistake is that I was patching openedx-lms-common-settings, and the correct patch is openedx-common-settings.