sub-task not strike-through in backlog JIRA Agile 6.7.11

Summary

In JIRA Agile 6.7.11, when a sub-task is being resolved, it won't show as strike-through in the backlog view under scrum board.

Environment

• JIRA 6.4.10
• JIRA Agile 6.7.11

• JIRA 6.4.9
• JIRA Agile 6.7.7

Steps to Reproduce

1. Create a story and a sub-task under it
2. Drag it into a Sprint
3. Configure the scrum board under card layout to show the sub-task under Backlog
4. Resolve the sub-task

Expected Results

The sub-task is being display and strike-through under the plan view of the scrum board.

Actual Results

The sub-task is being display and no strike-through under the plan view of the scrum board.

Notes

In JIRA Agile 6.7.7, the sub-task is being display and strike-through under the plan view of the scrum board.