Unity integration in LibreOffice 5.1 doesn't work in Ubuntu 15.10

I have upgraded to 5.1 using official PPA. But the menus don’t integrate with Unity bar. I’ve already tried to uninstall and reinstall with no success. Also, I can’t change the icon size or styles which is now in high contrast.

Any hints on how to proceed?

I had this problem. Someone on the bug site helped me out.

Remove/Uninstall the libreoffice-gtk3 package. This can be done in the ubuntu software centre - search for it. You might have to allow the technical items.

Yes, Removing the libreoffice-gtk3 package by sudo apt-get remove libreoffice-gtk3 has fixed it. Thankyou

Thanks that fixed it for me to!