User Picker Field Overlapped with Another User Picker Auto Complete in Inline Edit.

Steps to Reproduce:

1. Create a Test Project.
2. Create Two "User Picker" Custom Field, called it "User Picker A" and "User Picker B".
3. Assign the Custom Fields to the Default Screen.
4. Create a list of user for User Picker Auto Complete Function, for example user1 through user3.
5. Create an issue in the Test Project and filled both Custom Field with any user in the cretion.
6. After the issue created, try to Inline Edit the "User Picker A" and type "us" for Auto Complete.

Expected Result:
Just like the Drop Down, the Auto Complete result can be used without any trouble.

Actual Result:
After the Auto Complete is listed, the another User Picker Field "User Picker B" is overlapped the List.

Notes:

• It appears that Drop Down select not affected to this problem.
• The Assignee and Reporter field seems not affected to this.