No Titlebars - Raspberry Pi 4 - 2019.4

Hi,


I'm completely new to Kali, and already have a problem I can't find a solution for:
After downloading the latest img for Raspberry Pi 4 (Version 2019.4, tried both - 32 & 64Bit), using Etcher to write it on SD, and booting it on my Raspberry Pi, all of my windows have no window frame.
I do see the minimize, maximize and close buttons, but no titlebar.
And the startmenu button doesn't have an Icon.
Screenshot: https://i.imgur.com/MdW1IHO.jpg


I also tried the 2019.3 build - no problems here with gnome, but after upgrading, it's the same story.
Am I missing something?


Thank you very much for any help!