MDG properties grouping issue

[Luigi2021]

Hi,

I have a strange issue with MDG which drives me crazy. I have created several stereotypes and added group attributes to the metaclass. The stereotypes are also extending some other stereotypes. The strange thing is that with some stereotypes this work fine in both the properties form and the properties panel. But for some stereo types I see a repetition in the properties form but not in the properties panel. Any suggestions what might be the cause of this problem? I've provided two screen shot to clearify what I mean.

I could not add images here so I provided a link to my public person cloud.
https://lycaproductions.stackstorage.com/s/n6alqw6HMkzrywOI
https://lycaproductions.stackstorage.com/s/IVK6wPz8bcR8WLjU


Thanks in advance!

Luigi