View column (not form) shows HTML markup for a lookup field

So we have a custom field type that is a filtered lookup.   I believe the code came from Codeplex at one point.    After converting the sites from 2010 to 2013 the filtered lookup field shows in the View as HTML.    Searching this issue I see solutions if the Display form shows HTML but not the view columns.    Any suggestions to formatting the view?

Thanks,

Brad