Haven’t seen this one yet. My OLED came with the L5 button wobbling around in its compartment.
Going out for a torx screw head tomorrow, I’m assuming this is something I can tighten to the back chassis cover? Every teardown video just removes the back cover off screen so I can’t get a good view of what to expect.
I wasn’t able to get the torx to check but going by the other replies that seems to be it.
Upgrading from an LCD I may just take my old backplate. If you don’t have that available there are a few options for backplates but iFixit looks closest to the original.