Doesn't lock Settings app

[noparamos]

App works good at first: locks all selected apps including settings app. But J4 has removable battery and doesn't have battery for CMOS - so the system time after accidental reboot is different/changes. This causes some weird behavior of maxlock: the attempt to open settings app leads to maxlock lock activity window with countdown which begins from ~80000 seconds (after that time I can make next attempt to unlock settings app). But sometimes (after accidental reboot with battery removing) maxlock wouldn't lock settings app at all, but locks other apps at that time.
P.S.: Some activities of settings app are exluded from locking

Samsung J400F (Android 8.0)
Magisk 18.1
Xposed Installer 3.1.5
Xposed framework 90 beta3