Where did my bones go? I know they're still there, I can see them in the object hierarchy window, I can add and remove vertices to their component groups, but I cannot get them to display in the viewport. What did I do to cause this?

Blend file:
https://www.dropbox.com/s/vuvf2lpxyv5veq9/HK_HollowKnight.blend?dl=0
You messed up something with the workspace. I couldn't find out what, because in the menu the bones are checked in, but after I added a new Layout workspace I could see every bones.