Cannot copy/paste in LayOut 2024 (Mac)

[Edson]

I am having a problem which, I think, is restricted to the file I am working on.

I am starting a new set of construction drawings and decided to do it on an existing file that contains pages and layers that are office standards. Furthermore, I deleted all that was on the various pages and inserted the new model.

So far, so good, but when I try to copy the inserted plan on another page so that I can show another scene, copy/paste is not working. I tried through cmd-copy/cmd-paste: no way. Then through Edit>Paste: same result.

The same procedure on a clean file works seamlessly. There must be an issue with the file I am working on.

I tried to purge the file, but it did not help. Any ideas?

The file in question is here: https://www.dropbox.com/scl/fi/z6je0onlesnd14o3ye7so/problem-file.layout?rlkey=mdjbshk3rhuhl73py2v7tstk1&dl=1