On Sat, Oct 24, 2020 at 05:34 AM, Andrea Grillini wrote:

I arrived at the URL below and I mistook that content for the answer to my question

Since you're not a group owner/mod, you should have been looking in the Members Manual, not the Owners Manual.  The Members Manual does mention that owner/mods can always edit messages, but the manual is written from a member viewpoint.  FYI, if there's something that you're not sure about, such as this, it would be better to ask questions on Group_Help or GMF rather than here on the beta group.  If it turns out to be a real bug, it can then be reported here.

Duane