Menu bar in Libreoffice flatpak under Kubuntu 21.10 has no separators

After updating to Kubuntu 21.10, libreoffice under wayland looks like this: enter image description here

The titles of the menu bar "columns" are not separated. Any ideas how to revert this?

Solution 1:

As a workaround, you can run the flatpak version of libreoffice with GTK, which is a bit uglier and a lot more stable:

SAL_USE_VCLPLUGIN=gtk3 flatpak run org.libreoffice.LibreOffice/x86_64/stable

enter image description here