Bug in Firefox with UNC hyperlink

Today I discovered something that seems to be a (little?) bug in Firefox with rendering a hyperlink that links to an UNC path.
E.g. I want a hyperlink to \\server\data\projects. The link should be file://server/data/projects

• IE: file://server/data/projects
• FireFox: file:///data/projects
• Google Chrome: file://server/data/projects

Because Chrome renders is good as well, I assume Firefox is not dealing the right way with this kind of hyperlinks.