+Clip button not working for some unknown reason

I don't know why, but in my recordings for gameplay sessions, I'm trying to trim it down and turn it into a clip of a certain area of the session. However, the +clip isn't working for me. I tried increasing the storage size, and I have no custom setting for the particular game, I'm also on the early access version of Medal which seems to have fixed a previous issue which was that recordings weren't being saved or kept being corrupted.

I'm at a complete loss here, I don't know if I forgot a step, or if something else is going on. Has anyone else had this issue? I don't use hotkeys to record, the recording starts automatically when the game is launched.