Bookmark pagination error

Affected version
XF2.1

Bimble

Active member
Page 1 to Page 2 works fine - but items from the bottom of page two appear on the top of page 3:

202308

202309

I've tested deleting bookmarks from the bottom of page 2 (they don't appear at the top of page 3) and equally from the top of page 3 (they disappear from the bottom of page 2) - seemingly indicating they are the same bookmarks rather than duplicate entries.
 
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