[PROBLEM] xbian-config program addon shows black screen

[Roy Terhaar]

xbian-config program addon shows black screen
Software
XBian version: 20161221-0
XBMC/Kodi version:17.0-BETA4 Git:2016-10-21-b8acb84
Overclock settings:default

Hardware
Device type and model (e.g. Raspberry Pi Model A/B 256/512 MB, CuBox-i i4Pro, ...):RPI 3
Power supply rating:Original power supply adapter
SD card size and make/type:16Gb
Network (Ethernet or wireless):Kodi using Ethernet; wireless adapter active too on different network
Connected devices (TV, USB, network storage, ...):Philips TV, External USB harddisks Seagate and Hitachi

Log files
Will post any if needed...

Problem description:
When starting xbian-config addon from menu, splash screen starts showing progress on loading the configuration screen, but after that the screen stays black(empty) only showing the mouse pointer when moved. Only thing to do from that point is restarting xbmc. Apart from this issue everything in Kodi seems to be working well. I have had this issue approx. 2 months now but did not have the time to investigate; maybe due to some update, but that is a wild guess...
Xbian-config command line version is working normally.
There have been no changes in my hardware setup.

How to reproduce:
Problem occurs from any point in the kodi gui where you can start xbian-config

Right now I don't know how I can solve this issue, maybe checking/changing some files manually or reinstalling the addon package(s) (which?)?
Any help is appreciated.

Thanks.