I think what you are seeing is just that our rich text pasting is not very good yet. Agenda, unlike Word/Notes etc is not a rich text editor. It is a styled text editor. We only really support pasting of text at this point. You can’t paste images or tables or even styles like bold and italic. We plan to address this in future. It’s one of those ones we just never seem to get to.
Going the other way, ie, copying from Agenda to other apps, should work. We support RTF there. Tables included. If that is not working, something is going wrong.
We have a new bug fix release coming in the next week or two. It includes some fixes for tables. Maybe that is better. I tested the release version, and indeed, somehow the tables were lost in the copy. A test of our development version shows that you can copy and paste them into Apple Notes. So I think it was a bug, and we have probably caught it.
Will have to wait for pasting into Agenda, but copying out should work in the next version.