Continuity has two built-in resourcepacks, but if I play with both of the mods, these resourcepacks don't show up in the left menu.

Same thing happens if I first play just with Continuity, enable these resourcepacks, then launch with Recursive Resources too and disable them. They do appear in the right menu, but not in the left after I disable them. The video below shows exactly this behavior.

EDIT: this was in version 2.4.1 of the mod, I also tested with 2.3.0 and everything works fine there, these resource packs do appear.

Apparently I missed something in determining the location of a resource pack, it should be fixed in 2.4.2.