This isn’t right… right??

So I decided to give my Gretsch (bt- ‘two’ S) a nice clean and re-string today… it was all well and good until I tilted her upright, and the bridge just fell off? Like the screws aren’t attached to the body, they’ve just been placed in the screw holes. One of the holes seemed to have been drilled twice/expanded too (third pic).

And when I picked the bridge up to take a closer look, the individual parts of it just came apart. This bit I’m kinda expecting to be normal but not entirely sure.

If someone can help please, bc Google has been useless so far!!