Yes it was owned by Fender from Nov. '95 to '14 (April IIRC?).
By '98 Fender had implemented QC checklists on the manufacturing line and was investing in revamping the brand, like bringing back electrics and starting the Nashville Custom shop. Morale was good and it showed in products like my '96 D25. You look inside it and there's nary a glue squeeze from the bracing or kerfing, all the seams are flush and perfectly tight, the fret ends line up perfectly beveled as you looked down the neck, little details like that.
I remember thinking to myself "Man they even made it spotless
inside where hardly anybody ever looks, read between
those lines....true pride in craftsmanship" (That was my first of 3 Guilds, all bought new)
One of our members who'd worked in Westerly at the time, Hideglue, made a statement that "QC reached its zenith under Fender". It caused a bit of argument when it was interpreted as meaning that those years produced "the best" guitars (although some of us did and still do do believe that, think
@West R Lee still does).
Paul (Hideglue) had to take pains to explain that it was the checklist system that created high consistency and fewer "rejects" (which is what QC is all about), not that the guitars were necessarily "built better". They just formalized Guild's existing standards to ensure they got consistently applied.
Seeing the work that was done to that 12, I suspect something outside of normal wear and use may have caused that fretboard to come loose, but obviously somebody realized the instrument was worth fixing. Dealing with a fellow member also usually has pretty good results around here.
I used to think I'd prefer a "pristine" guitar but I've become more flexible. I get your desire to simply be sure you're getting good value for your hard earned money, and in the end only you can make that decision. I see this one as a "ready to play", no surprises since it's been gone over pretty thoroughly already. And yeah, lots of folks like their saddles a bit low, that's one reason the neck alignment chck uses the top of the bridge. A low saddle and/or low action in and of themslves don't mean neck angle is bad. Only the alignment check will show if your geometry is good (and assuming saddle hasn't been shaved, although there are situations in which I'd even accept that as the most reasonable solution these days.
FWIW I didn't think that saddle has been shaved, looks pretty "fat" to me. And I judged the alignment of the straightedge in the pic by the fact you couldn't see any of it peeking out from under that obscuring string. It also looks nearly perfectly aligned with one of 'em on the top edge, so even allowing for slight angle-of-view distortion, that would indicate to me the ruler's hitting right at the top of the bridge or a few thousandths low maybe. I still think it's fine.
Good luck!