If I'm not mistaken GIN will replace posting list to posting tree (and so
shift it to another page) when on a current page there is not enough space.
But this does not necessarily mean that page is not enough to accommodate
current tuple(1). This rather means space left on a page is not necessary
d
The following documentation comment has been logged on the website:
Page: https://www.postgresql.org/docs/12/gin-implementation.html
Description:
In the part 'when the list is small enough to fit into a single index
"tuple" along with the key value' should the word "tuple" be replaced by the
word