I exported/installed my new font and it works perfectly when used INSIDE the design programs (InDesign, Illustrator), but when I export as a PDF, all of the glyphs/ligatures get jumbled around, and the output is just nonsense. I have tried on multiple computers, exported with a different name, etc. and nothing seems to be solving the issue.
Did it occur with an OpenType-SVG color font?
If so, such PDF exported files are not yet compatible with most apps due to the novelty of this font format (but they should load ok in Acrobat or other Adobe apps).
If not, please send the PDF and OTF font to firstname.lastname@example.org so we can have a closer look.