Replacing keycap and the key does not spring

I popped the space key off to clean some stickiness and now I cannot seem to get the keycap back on and functioning. It clips on, but there is no spring to the key, it’s just stuck in the lower position. I don’t see any damage to the keycap, tension bar, nor the scissor mechanism. All of the videos I see make it seem like it just works. What could I bedding wrong?