Discover will not disappear from my favorites in the Application Menu even if I remove it, no matter how much I try.
STEPS TO REPRODUCE
1. Right-click the Discover icon in the Favorites Menu of the Application Menu and click "Remove from Favorites".
2. Log out of Plasma.
3. Log into Plasma
Discover adds itself back into the Favorites Menu.
Discover should be removed from the Favorites Menu.
(available in About System)
KDE Plasma Version: 5.19.0
KDE Frameworks Version: 5.70.0
Qt Version: 5.15.0
*** This bug has been marked as a duplicate of bug 385814 ***