When you will fix fatal bug regarding (View workflow) diagram.
Simulate bug:
1. Start work on bug - show work progress
2. Complete work - show that work is complete
3. Open it again and start work - show work progress
Step 3 is wrong on your diagram. You need to show back history too. Now you show only first two step and that is.
What you show now in your diagram
step 1 open task -> step 2 work on task -> step 3 complete task -> step 4 test task
then if for some reason task is open again you will show the same diagram but you need to show that diagram
step 1 open task -> step 2 work on task -> step 3 complete task -> step 4 test task -> step 1.1 open task again -> step 2.2 work on task again
You did not show history of your diagram work flow but you show that info in table list in main descriptions. If you show that you need to change your diagram too.
This bug is very fatal.
This bug show to people that Jira is unfinished portal.