Numerous pop-up dialog boxes block the entire(main window) interface
Unfortunately, there's no checkbox in the settings to tell the program to try to send undelivered messages immediately after launching the program, or (as I understand it) after the announce, or after pinging the other interlocutor... (also a flaw). The network section announcement (in my case, the community interfaces/servers) has a very rare announce. and also doesn't allow undelivered messages to be delivered to the other interlocutor, since I might be online less often than the Amsterdam announcement, which would show the online status of my other interlocutors (as I understand it) (also a flaw).
As I found out: Most of my other interlocutors were offline (6/7). I decided to ping each of my other interlocutors one by one (and quickly). I clicked on the each and then clicked "Ping destination". The last one was the one who was online (echo bot) - I also pinged them. The echo bot ping window, of course, appeared first... Then pop-up windows for previous requests started appearing... And I started closing these pop-ups one by one... Ultimately, most of the pop-ups didn't respond to the "OK" button. And since these pop-ups don't allow interaction with the main window, the main window was blocked. The Dashboard in Ubuntu (24.04.3 LTS) also didn't allow switching between application windows. I had to force close the program window.
PS: MeshChat 2.3.0, my LXMF 02c9ba1e3fe290da65f59ab14c4f7dd6