After creating a font resource pack using glyph_gen(https://mcbeeringi.github.io/apps/mc/glyph.html) and applying the pack, letters like "p g q y j" which end under normal letters are displayed as normal letters.

I have attached a image of the bug in the main menu as well as a image of the resource pack's contents.
If this is a issue related to a change of the format of the resource pack, I apologize.