Before and after applying this patch,
* Try to access the list of your contact numbers at `/settings/panel/contact/`
* Try to access an existing, previously created contact number at `/auth/contact/1/`
* Try to add a contact number at `/auth/contact/edit/`
* Go to e.g. `/settings/panel/datetime` and check the "Authentication" section in the left sidebar for {nav icon=hashtag, name=Contact Numbers}