That was fixed a while ago, but it looks like the OP didn’t have the fix. If the OP is using SPForm, that would be my fault because it has its own veriword and font files and I’ve been too lazy to put the fixed version in the repository (which I can’t log into anyway).
BTW, my fix is trivially faster (though it fails for non-fonts with ttf in the filename). Both fail on your example of a dir ending in .ttf inside the ttf folder (but remember it’s MODx’s veriword font folder so it’s *extremely* unlikely that would happen).