I have a problem with the black background of some parts of libreoffice that I don't know how to solve (look the screenshots), I don't understand if it's about Libreoffice or Budgie, can anyone help me?

What widgets theme are you using in "Budgie Desktop Settings", and did you customize your LibreOffice theme in some way?

    Staudey
    I had a dark theme, but I put the normal one back. Libreoffice I had made some changes that I don't remember, but today I deleted the libreoffice folder in .config and reinstalled libreoffice and the problem persists.

      I just read "IMPORTANT: Issues with latest update / GNOME / Budgie / GTK apps", waiting to finish downloading Gradience I can already say that with the dconf-editor solution it works with the dark theme, so fine.
      On the other hand, gnome-control-center just doesn't work.

      $ gnome-control-center
(gnome-control-center:11452): GLib-GIO-ERROR **: 15:58:33.133: Settings schema 'org.gnome.shell.app-switcher' is not installed
Rilevato trace/breakpoint (core dump creato)

      I'm not totally sure of what I have done, however I installed Gradience, tried using it and didn't notice any changes whatsoever. About Dconf, I have restored the default. But now everything works if I use Flat-Plat-dark as a Widget theme, with Flat-plat the problem persists, with the other themes I discovered the problem there isn't also in the themes not dark.
      So I think it is solved it one way or another, but I wasted your time, thanks for your help and sorry.

        FAb7D Hey, don't worry, your issue was/is real and I'm glad it's (kinda) solved (also I didn't yet invest much time in it anyway, since you solved it yourself while I was still busy preparing some other stuff). The whole theming situation right now is a bit of a mess. Btw thanks for the heads-up about the gnome-control-center issue!

          I switched to Onlyoffice because of the jarring themes of Libre.