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I know there are some ways to imeoove it by allowing the app to always run in the background, but still it’s very annoying and it happens constantly to me and many others. What is the root problem? Why don’t other messaging apps have this problem?


I’ve been using Signal for about 5 years, WhatsApp for longer, LINE for shorter. The only one that seems to get background process killed occasionally is the latter. I’m on a Xiaomi phone and their version of Android wants to kill everything, except their own apps. Signal stays up.
Nobody has ever complained about not getting Signal texts to me.
Have you actually seen evidence of missing messages? There could be human error involved or you caught ghosters red handed.
I can literally see that massage is not even delivered. If I see the delivery mark, then yes, the notification always appears. Then frim that point is person fault, but not when the message seem to not even reach the other. (Mind the phone is online and other apps deliver)
You can turn off read receipts in settings > privacy. So I think if the person you sent the message to has turned this off you won’t get the two ticks in a circle. Could it be that?
Nope, not that, as it does change eventually when reminded to just open signal for example.
@bradboimler@lemmy.world has posted a link in this thread that would be the next thing I’d try to investigate.