Many major and most small airport layout is missing on 3rd party embedded vector maps. Example: LOWW > all detail and taxiways are visible in the charts app but no on the embedded map of SimBrief or AviTab (XPlane). In these apps the airport area is completely black.
This just started to happen in the last few days.
I have the same problem. Airport and taxiway maps are not displayed in the SimBrief (Navigraph High IFR) and in the PMDG 737 tablet.
So where do we submit a ticket for this?
There is an another thread for this, they say they are doing on that 
Hi…,
As I mentioned at Zoom in charts EFBs not working - #12 by Ian , we’re aware of the issue and will look into it during the working week, which has just started.
Regards
Ian
Hello! As an update to the topic mentioned above, we have now fixed this issue. Let us know if you are still having issues!
Kind Regards,
Malte