Bug#944354: "Edit filter settings" is disabled in LibreOffice Calc + KDE 5

[negora <public@negora.com>]

I've made a break and have tried the version of LibreOffice from Debian
Backports. The check-box works fine now. But the only packages that have
been upgraded are those relative to LibreOffice, none from KDE Framework 5:

  fonts-opensymbol
  libreoffice-base-core
  libreoffice-calc
  libreoffice-common
  libreoffice-core
  libreoffice-draw
  libreoffice-gtk3
  libreoffice-help-common
  libreoffice-help-en-gb
  libreoffice-kde5
  libreoffice-l10n-en-gb
  libreoffice-math
  libreoffice-qt5
  libreoffice-script-provider-python
  libreoffice-style-breeze
  libreoffice-style-colibre
  libreoffice-style-tango
  libreoffice-writer
  python3-uno
  qtgstreamer-plugins-qt5
  uno-libs3
  ure

Doesn't it mean that the bug was there, in LibreOffice? If that's right,
Will the fix be back-ported to the version of Debian Buster?

Thank you.