Yes, I have the same issue.
Guests can’t even upload anything. That’s quite embarrassing.
Everybody should be able to paste or drop files into the chat, wich get then stored in a shared folder named like the conversation and accessible for all participants.
Once the call ends, NextCloud talk asks the admin if he wants to keep all data of this call. If not it is automatically deleted.
Nice scenario, now who would like to program that?
Yes, I have the same problem within my organization. Editing is now a required feature for a direct message service; this small lack of feature is costing a lot for a wider app adoption and popularization.
Perhaps, a little more animation on this topic on Github https://github.com/nextcloud/spreed/issues/1836 could keep the ball rolling and shows how important (and essential, for some) this feature really is.