The due date on an [asmt_assessment_instance] record is not the same of the "Testing end date" given during "Notify Tester".
Steps to Reproduce
1. Verify the Test Management plugin is enabled
2. Create a test plan
3. Click the "Notify Tester" related link
Notice in the "startExecution" method of the "tm_StartExecutionProcessor" Script Include the duration is calculated from start_date of tm_test_plan instead of today(current date).
This issue is resolved in Kingston. As a workaround, in the "startExecution" method of "tm_StartExecutionProcessor" (Script Include), replace:
var _duration = gs.dateDiff(testPlan.getValue('start_date'), _testingEndDate,false);
var _duration = gs.dateDiff(new GlideDate()+" 00:00:00", _testingEndDate,false);
Related Problem: PRB962226