Created Unassigned: Relative urls are not resolved in LESS files [75]

My problem is similar to https://bundletransformer.codeplex.com/workitem/68

I'm trying to use the LESS Bundle Transformer with the Twitter.Bootstrap.Less nuget package, but the glyphicon urls are not being resolved to absolute urls. All the other LESS translation to CSS and CSS minification is working fine.

Eg. url('../fonts/glyphicons-halflings-regular.eot');

I tested this against CssUrlRuleRegex and it gets a successful match.