user can not link Task ld (issue ) when we are creating Bug

[Hari Kamalesh Yenduri]

Steps to Reproduce 

• login to Jira account with valid login details 
• click on the create (using to create bug) button  present on the top  in Jira screen
• user will see dialog  box fill all the mandatory fields 
• Scroll the left scroll bar till user see the linked issue drop down
• Try link issue which is created as Task id  
• Click on the create button

Actual Result : User can see a error  linked issue key  does not exist under linked issue drop down

[Khanh Nguyen]

Jira 6.1.6 with script runner 2.1.16