Salem

I went to craft fyne pantaloons, 3 yellow stained cotton and one sea island cotton and it said I didn't have the right ingredients which isn't really the bug here because I could be missing something although I'm not sure what. However when I switched from fyne pantaloons to planed board my crafting options were "fyne pantaloons" "craft" "craft all" clicking on fyne pantaloons brings me back to the pants. It's not really a big deal, I've seen it happen a couple of other times with other items.

Has anyone else had this happen? Is it a weird feature or a glitch on my end?

I think it's Ender's client feature, letting you return to the last craft. Also, clicking on icons of materials in crafting window should open crafting window for those materials (if applicable). As for the pantaloons - I think they require egyptian cotton, not yellow stained

yes: if you right click an object in the crafting menu, it will take you to the recipe for that object. A button will appear, holding the object you came from. As far as I know, the button can remember (in practice infinitely) many objects, in a LIFO manner.