Users complain that Action Plan Tasks are being deleted without their request

[BiglyB]

So I added a flow Custom Error any time an Action Plan task is being deleted (this is on the Task object)... here's what I got:

1. User tries to edit the name of an Action Plan
2. User never clicked a DELETE button
3. User gets the error bullets below

• [Custom Error] You cannot delete an Action Plan Task! If you weren't deleting a Task when you saw this message, please send a link to this task to [IT email address].

• [Apex Error] Error when deleting newly-dependent Task related to APTaskTemplate: Delete failed. First exception on row 0 with id 00T2R00006RkNzDUAV; first error: FIELD_INTEGRITY_EXCEPTION, You cannot delete an Action Plan Task! If you weren't deleting a Task when you saw this message, please send a link to this task to [IT email address].: []

• [Apex Error] LabsActionPlans.APTask: execution of AfterUpdate caused by: System.DmlException: Upsert failed. First exception on row 0 with id 00T2R00006RkNzCUAV; first error: CANNOT_INSERT_UPDATE_ACTIVATE_ENTITY, LabsActionPlans.APTask: execution of AfterUpdate caused by: System.DmlException: Upsert failed. First exception on row 0 with id a2h2R0000057PbwQAE; first error: FIELD_CUSTOM_VALIDATION_EXCEPTION, Error when deleting newly-dependent Task related to APTaskTemplate: Delete failed. First exception on row 0 with id 00T2R00006RkNzDUAV; first error: FIELD_INTEGRITY_EXCEPTION, You cannot delete an Action Plan Task! If you weren't deleting a Task when you saw this message, please send a link to this task to [IT email address].: []: [] (LabsActionPlans): [] (LabsActionPlans)