It seems Collabora is not so good in handling selection on weird cells. For example here @dario.crespi.wmit tried to click on B4 - resulting in D5:

This is the document:

It seems to me that:

• Collabora: perfect in render, not perfect in selection
• OnlyOffice: perfect in selection, not perfect in render

I cannot reproduce that issue in the official demo of Collabora anymore.

Using Collabora was always our first choice, it just wasn't available from the provider back in 2020. Nowadays it's their default, IIRC, so it should be easy to switch.

I see archivio.wikimedia.it is already using Collabora 22.5.802. Judging from the update notifications, "Collabora Online - Built-in CODE Server" was installed some time before 2022-07-21 and OnlyOffice was removed some time after 2022-06-21. The availability of Collabora by default was announced on 2022-10-10.

So, what remains to be done here?

Uh! Thanks for this info.

So, I just need an account to try Collabora in archivio :D

(My account doesn't need any particular permission, to any directory. I just need 1MB of quota to test things.)

If you can create one, I'm boz at reyboz.it as usual

(Also reported by Piergiovanna Grossi from mailing list "tech" 👍 - P.S. to access the mailing list archive, you must subscribe - https://mailman.wikimedia.it/private/tech/2025-July/001554.html )