An editor had an issue on English Wikipedia with the hyperlink tool when used within the reference editor.
Specifically, he formatted a reference manually and then used the hyperlink tool within the reference editor to provide an external link to the work. He found that many options were offered, to the point that the reference box was obscured by the list of possible links and he had to just guess where to paste the actual url.
I reproduced this and took a screenshot.
http://en.wikipedia.org/wiki/File:VisualEditor_Reference_issue.jpg
Version: unspecified
Severity: normal