Subtasks do not inherit fixversion when created from parent task.

Summary

Subtasks no longer inherit fixversion from parent task upon creation.

Steps to Reproduce

1. Create an issue like a Story.
2. Set a fix version for it
3. Create a subtask under it

Expected Results

1. Subtask created will inherit parents fix version.

Actual Results

Subtask doesn't inherit parents fix version.

Notes

This works fine in JIRA 7.0.5