Hello! I don't know if this is an issue or a feature, but might
aswell trow it here.
So I found my 2nd and 3rd gimmighoul from this batch, pretty much
back to back, the third one was on a link on the page of the first
one.
Since I had a full party but 2 of my eggs where about to hatch, I
decided to wait to claim them. After I hatched them I went back to
claim the first one and when I went to claim the second one, it was
gone.
This happened also on the first 5 gimmighoul, found one of them and
afther clearing a room on my party, it was gone
My guess is that they're the same Gimmighoul, assuming it's not a
matter of new Gimmighoul locations from the event. If you have a
Gimmighoul in a place that has two different versions of the page
(for example, the Pokedex has all kinds of filters that may be
considered variants of the same page) then you'll find a Gimmighoul
on each of those but those are actually the same instance of a
hidden Gimmighoul. Collecting one will collect the other because
they're the same Gimmighoul sprite but on two variants of the same
screen so that if you find it on one page you'll be able to find it
no matter what minor difference there is in the page. It happens
all over the site.
Just remember: You can't prove God didn't crawl out of the
ocean.
(Please give me minor social graces, I have autism and may not
understand what you're saying at first!)