'Activities with Contacts' report displays the same 'Account Name' for all Contacts

Consider the following scenarios.

Scenario A: Related To Field is Blank

 
1.You have the following contacts and their accounts. 
Contact A - Account A
Contact B - Account B
Contact C - Account C

2. You have a Task with the following details:
- Name field: Contact A (Primary), Contact B and Contact C - All three contacts are associated to the Task. 
- Related to Field: Blank

When you run the report, you will see 1 row per each Contact - Account Name on each row shows the Account of the Primary Contact only.

Scenario B: Related To Field is an Account or Opportunity

 
1.You have the following contacts and their accounts. 
Contact A - Account A
Contact B - Account B
Contact C - Account C

2. You have a Task with the following details:
- Name field: Contact A (Primary), Contact B and Contact C - All three contacts are associated to the Task. 
- Related to Field: Account or Opportunity

When you run the report, you will see 1 row per each Contact - Account Name on each row shows the Account of the Related to field.

Scenario C: Related To Field is Another Object (Campaign, Case, Custom Object)

 
1.You have the following contacts and their accounts. 
Contact A - Account A
Contact B - Account B
Contact C - Account C

2. You have a Task with the following details:
- Name field: Contact A (Primary), Contact B and Contact C - All three contacts are associated to the Task. 
- Related to Field: Other Objects (Campaigns, Cases, Custom Object, etc.)

When you run the report, you will see 1 row per each Contact - Account Name on each row shows the Account of the Primary Contact only.