I made a divert call profile, that did not work as expected (I set the pattern to **1 and redirect to my Mom's number, without knowing about the significance of * char). Basically, any call to a number ending in 1 was diverted to Mom.
I deleted the profile but the diverted action was still active. I restarted the phone - same.
I disabled Tasker - the diversion was off. Enabling Tasker reactivated the diversion.
Phone: Xiaomi Mi A1 - Android Pie.
I'll have to stop using Tasker untill the problem is solved.
Update: I deleted all profiles and restarted phone.
The diversion is still active.