This issue is related with the fix of issue JRA-14032
Steps:
1. Create a new issue and create some sub task for that issue.
2. Suppose we have sub task blocking condition activated for the project in the workflow.
3. Once all sub task are closed, user closes the parent issue.
4. Now User can't create new sub task for closed parent issue.
5. Try reopening the subtask without reopening the parent issue.

Result:
1. User can reopen the subtask for a closed parent issue.

Expected:
1. User should n't be allowed to reopen the issue till parent issue is not reopened/open.