Issue Summary

• Opening reference selector dropdown on Branches view or Source view before page content is loaded and list of references is fetched from BE causes dropdown to open in offset location.  

Steps to Reproduce

1. Go to Branches list page
2. Open reference (branch, tag, commit) selector dropdown before list of branches appears
3. Once list of references is fetched from BE, they will appear but not in the intended location immediately after the dropdown

Expected Results

Dropdown options should appear immediately after the dropdown element in a menu.

Actual Results

Dropdown options appear further down the page with a large gap between the menu and the dropdown element.

Workaround

User can still select an option from the dropdown menu located further down the page.