Deleting a task doesn`t remove it correctly as a dependency

Tested on a local instance of XE 7.4.2

1. Login as Admin and create 2 tasks.
2. Set the 2nd task as dependency for the 1st one.
3. Delete the 2nd task.
4. Open the 1st task and check Dependencies field.

Actual result:

• You see [TaskManager.TaskManagerClass_status_${taskstatus}] ${tasktitle} (Due Date ${taskduedate}) in the place of the deleted task

Expected result:

• I expect not see any more this code.