Sometimes no notifications for new received SMS messages

Checklist

[X] I can reproduce the bug with the latest version given here.
[X] I made sure that there are no existing issues - open or closed - to which I could contribute my information.
[X] I made sure that there are no existing discussions - open or closed - to which I could contribute my information.
[X] I have read the FAQs inside the app (Menu -> About -> FAQs) and my problem isn't listed.
[X] I have taken the time to fill in all the required details. I understand that the bug report will be dismissed otherwise.
[X] This issue contains only one bug.
[X] I have read and understood the contribution guidelines.

Affected app version

1.0.1

Affected Android/Custom ROM version

Android 12

Affected device model

Nokia G22

How did you install the app?

F-Droid / IzzyOnDroid

Steps to reproduce the bug

Receive an SMS from and external number (contact or non)

Expected behavior

Receive a notification when a new message arrives.

Actual behavior

Sometimes there is a notification, sometimes there is not. I can open the app manually and then the message list will show one conversation in bold (although in the list view the new message is not previewed) When I open the conversation then the new message appears at the bottom.

There seems to be no corelation between do-not-disturb / silent / vibrate global settings.

It appears random at the moment and has been an issue since installing. This wasn't a problem when the app was "simple mobile tools" AND before the Android 12 update but I can't pinpoint exactly when it started to happen. It's intermittant. Doesn't seem to differentiate between contacts or non-contacts. There are no per-contact custom notifications set. I have tried a "reset to defaults" of all phone notifications, but the behaviour persists.

Screenshots/Screen recordings

No response

Additional information

No response

FossifyOrg / Messages