[Affected versions]: - 65.0a1 (BuildId 20181123100103) - 64.0b12 - 63.0.3 [Affected platforms]: - Windows 7x86 - Ubuntu 16.04x64 - Windows 10x64 - mac OS 10.13 [Preconditions]: - extensions.formautofill.available set to "on". [Steps to reproduce]: 1. Launch Firefox. 2. Go to about:preferences#privacy 3. From " Form & Autofill" click "Saved Addresses" 4. Click "Add..." 5. Type any character in Phone field and save. [Expected result]: - In Phone field you can write any character. [Actual result]: - Phone field accepts only numbers. [Regression range]: -I'm not sure if this is a regression. I'll investigate this when time permits. [Additional notes]: - If you choose US at country and type (e.g. dsfdsfsdf) the string is converted to a phone number but if you type (e.g hgsf76) the string remains as it is.

Valid phone numbers can contain many non-numeric characters e.g. (, , ), and -. See #24 on https://github.com/googlei18n/libphonenumber/blob/master/FALSEHOODS.md We leave normalization to PhoneNumber.jsm which uses data from libphonenumber.