Mine does this, and a friend's LX does as well. Seems like a poorly designed tab on the bumper skin can't be grabbed firmly enough by the retaining clip, usually after removal of the skin.
Curious if someone has a solution.
Mine does this, and my Prius did it in the same spot
Knowing I’d never have to take the Prius bumper cover off, I pressed it together and JB Welded its together on the backside and left it all clamped together overnight, looked perfect and held for 5+ years
Haven’t been motivated enough to do the same on LC