Inappropriately adding phone prefix to contact numbers

[9662]

Steps to reproduce

1. Go to the application settings in Nextcloud and set that country code to match your phone's international prefix (e.g., +49).
2. It is assumed that you have the Android client installed and correctly configured on your phone.
3. From your phone, send or receive SMS to a foreign number (e.g., +43 123456)
4. Wait for OCSMS to synchronise (or force it)

Expected behaviour

When looking at the message list for our foreign contact on the server, I should see the SMS sent / received.

Actual behaviour

No SMS appear. The contacts phone number is mangled by forcing the addition of your own local prefix. So that my contact +43 123456 appears as 4943123456.

Server configuration

Nextcloud/ownCloud version: 13.0.5

PHP version: Unknown

HTTPd server: Nginx

Database engine & version: Postgres, version unknown (9.x)

Client configuration

Android version: 7

Phone: BQ X5

Nextcloud SMS app version: 2.0.4

Logs

Unable to produce logs at this time ☹