Bookmarks getting jumbled with other categories

Problem since updating to 24.2.2.2(X86_64) Win11 with Bookmarks in Writer. Other items like Pages, Field by type and Headings in the Navigator sidebar keep replacing the Bookmarks so that I have to keep clicking on Bookmarks to bring them back. How can I lock Bookmarks into place?
Before the update I had a problem with the Bookmarks not holding the Alpha sort so at least that issue is not happening.

side effect of tdf#157729 ?

Maybe. I don’t know enough about such things to say. Is anyone else noticing this problem?