Illustrator paragraph style missing attributes

hi! i've noticed that sometimes a paragraph style i've created in illustrator—with specific font family, font style, size, leading, tracking, etc.—will have the font family and font style fields blank when i open go into the paragraph style options to edit. the style will work properly, including applying those attributes, but if i go to edit i have to repopulate those fields, which in some cases becomes a trial-and-error attempt to recreate the original style so i can make whatever changes i want to make. i attached a screen snip, which even shows the font name is incorrect in the toolbar (the font is called "big shoulders display" and the toolbar says "myriad pro"). is this happening for anyone else, and is there a way to fix it?