As you can see in the video I added, when I put lines from the pasteboard onto an artboard, the lines won't appear on the artboard but remain a part of the pasteboard. This not only happens when being dragged there, but also if I try to rezise lines that are part of an artboard. They "jump" from the artboard list right to the pasteboard list in elements. Notice, how the coordinates don't change and adapt to the placement on the artboard, but still to the placement on the pasteboard?
This is a bug I struggle with for some months now. Please help/fix it.
Sorry to hear you are experiencing the issue from a long time. I am unable to reproduce the same at my end on my windows machine on XD 34 version. Could you please confirm if it's happening with every file or with a specific file? Please share the OS and XD version of your machine. Is it possible for you to share the file with me over a private message so that I can test it at my end? If yes, please upload the file to a shared location such as Creative Cloud or Dropbox and share the url with me over a private message.
I will try my best to help.
Note: Please add the url of the post over a PM for reference.
I wittnessed this behaivior in many files, even more recent ones for that matter. I will upload a file with the issue and send you a link right away. My OS is Microsoft Windows 10 Pro (Version 10.0.18363)