There is some kind of blanket-remove bug with bookmarks. Try bookmarking a URL with query parameters in Safari on iOS. I don't know if it happens with every URL, but with this one[1] specifically, it drops the query parameter from the bookmark. You have to go add it in manually by editing the bookmark afterwards. I wonder if it's motivated by the same kind of change as this article is about, or if it's a separate bug. (I haven't tested this recently, but it was true as of late last year.)

[1] https://www.twintown.com/collections/acoustic-guitars?sort_b...