Game glitched and now I can't attack...?

SPOILERS! So, I think this triggered when I landed on the wrong part of the beach after jumping out of Willis' plane. Not sure, just when it happened. Now I can't access the weapon selection, throw grenades, and melee. I can still do takedowns and interact with stuff and everything else normally. Has anyone else experienced this problem and does anyone know how to fix it?

EDIT: So right after I posted this I continued playing and now everything is randomly back to normal. I think maybe getting the privateer uniform may have fixed it but I honestly don't know.