I’m having the same problem with MyFonts validation and Windows vertical metrics
clipping. Fonts that were accepted before are failing to validate now.
After much experimenting and testing, I sent an email to MyFonts tech support, and they recently changed their validation algorithm which is causing the problems. It would be nice to know their actual requirements instead of spending days and weeks tweaking numbers and failing. Maybe GlyphsApp can investigate and come up with a solution.
Here’s MyFonts reply:
We’ve recently made some changes to the validator inside Monotype Font Platform. The goal of the validator is to ensure that fonts released to MyFonts do not contain common issues faced by customers, which leads to large numbers of support requests, refunded orders, and unhappy customers. We are going to make some of the red errors into warnings so that the fonts can make it through for review while we evaluate how we’re testing each of these important characteristics! I will follow up with you once this change has been made and you can resubmit your fonts. You can see our articles about the validator here: https://foundrysupport.monotype.com/hc/en-us/articles/360034496091-Font-Validator-Overview We are adding new articles regularly, so check back in.
Thanks for your patience while we are working to improve MyFonts for our customers and ensure that we only sell quality fonts. I’ll email you ASAP once the changes have been made.