The new at 25.2 View -> Page Layout implementation [1][2] does not currently link to the corresponding view mode as present on the Status Bar. Mode selection made from the page layout menu (Single page per row, Multiple pages per row, or Book view) do not link to the corresponding entries on the Status bar (Single-page view, Multiple-page view, or Book view). And vice-versa for selection from the Status Bar. Seems like they should be in sync.
=-ref-= [1] https://gerrit.libreoffice.org/c/core/+/176367 [2] https://gerrit.libreoffice.org/c/core/+/178242
Also, since the UNO reuse is still under consideration, seems the strings from the Status Bar instance of the control should be reused for the View -> Page Layout to lighten the l10n effort.
You mean it's not refreshed immediately but after only some input? If at all a minor issue, IMO.
In my test, if I check Book View from View menu, the icon is Ok is checked/unchecked, the problem is just for Multiple page-view. Also, the document arrangement in page is different if checked in multicolumn page-view from View or from the statusbar. I confirm some problems here. Version: 25.2.0.1 (X86_64) / LibreOffice Community Build ID: ddb2a7ea3a8857aae619555f1a8743e430e146c9 CPU threads: 16; OS: Linux 6.8; UI render: default; VCL: gtk3 Locale: ro-RO (ro_RO.UTF-8); UI: en-US Calc: threaded