Thank you. I've tested this on our end and cannot reproduce the issue with the sample you sent.
My guess is you have another Chrome Extension like the Skype extension or some other telephony helper that is recognizing the phone number and modifying it in a way that it gets deleted from the snippet.
If you have any other extensions installed, can you try disabling them and then seeing if the issue still happens for you? Please let us know if that fixes it.