Recently, the app shortcuts on my lock screen have disappeared. I've checked to see if they are on in the settings and in fact they are. I don't have any themes installed or no special customizations. Any help would be appreciated.
Is your phone running Android 8 or 9?
I am running Android 9
Did you try toggling them off and then on or changing the assigned shortcuts? Have there been any recent updates or have you installed any apps recently?