This feature would be most interesting. I think I could achieve the insertion of pdf additional pages,in the case in which additional pages were added in the end of the pdf. When adding pages, in the actual version of xournal++, when using the option to add pdf with a pdf background, there is an option to select unused pdf pages. I added 2 new pages in a pdf and could include them inside the xournal file. Of course this not automatic but in my case it solved my "problem.
This is a most wanted possibility in order to open video link for example. This would be especially usefull for teacher that uses xournal for online teaching because it would simplify incorporation of videos in video lesson or live lessons.
This bug is still valid for version 1.D8. It is also not possible to create a function...
This bug is still valid for version 1.D8. It is also not possible to create a function...