This issue is purported to be fixed, but I'm still getting a false type one warning after upgrading to the last version of InDD 18. (18.5.2). The flagged font is Whitney Black, the only font out of the the entire OT Whitney family that's installed on my MacBook pro that gets flagged. Whitney Black also shows up twice on my font list, even though there is only one version installed and used in my stylesheets. The font is clearly OT in the replace font dialog box, does not trigger a preflight warning and exports fine to PDF.