Weird alert on startup

I get this alert on startup. Started to appear after updating to 2.3.1 I think. I checked the unicodes, they are for Malayan characters. I tried to remove and add my custom filters, but didn’t work.

Any ideas? Thanks!

You have a custom GlyphData.xml file that has several glyph with the same production name. Search in the file for the names in the error
Message and resolve the duplicates.

Thank you, I fixed it. I have no idea how that could happen though, I have never edited the file manually before.

But where did you get the file then and why do you have it?

I have no idea. The file has 25k lines. And the alert started to pop up after an update. Maybe something got mixed up during the installation?

This validation was introduced recently.