Embedding Firefox 6.0.1: links not displayed correctly

Does the team have any ideas on this? The browser displays pages correctly with the exception of a href=.../a which are rendered as normal text. The link works when clicked and UpdateProgress and UpdateStatus on IBrowserFrameGlue all work as expected. What am I not handling? Building as

Embedding: unable to edit text fields/no caret

For anyone else banging their head on this particular wall: https://bugzilla.mozilla.org/show_bug.cgi?id=533245#c13 In short the solution is to implement GetVisibility like this: NS_IMETHODIMP WebBrowserChrome::GetVisibility(PRBool * aVisibility) { NS_ENSURE_ARG_POINTER(aVisibility);