For anyone that might need to hear it. I just installed the flatpak, and when linking it to my Molly app, I saw on the app the option to sync all message history. This is what always bugged me on the desktop client. Seems they finally went ahead to enable this feature.
Why do you need this? I’m curious because I didn’t even notice Signal had this restriction. To me instant messenges really aren’t something that I’d ever need an archive of.