Hi Hugues,
I have created a test sample as per your specifications and tested for the above mentioned issues. These are my observations :
1. The sample worked fine and I could not observe any issues with it. The TreeViewAdv could be navigated using the up/down, and collapsed/expanded using the left/right arrow keys.
2. The PopupMenu associated with the TreeViewAdv too worked fine. I could navigate through the BarItems in the PopupMenu using the up/down arrow keys.
Please refer to the
test sample attached here and let me know if I have understood your problem correctly. If not, kindly modify the sample to show the problem and send it back to us so that we could take a look at it. We appreciate your cooperation, and thanks for choosing Syncfusion products.
Regards,
Guru Patwal
Syncfusion, Inc.