There is a bug in the system to where if you send a SMS from the mobile app, and you do not select the phone number, as opposed to the Name/Extension that shows up by default, the recipient can only see the conversation on their mobile app, not the desktop app. The conversation also appears as a separate conversation from the text conversation you may have previously had with that contact.
There is a bug in the system to where if you send a SMS from the mobile app, and you do not select the phone number, as opposed to the Name/Extension that shows up by default, the recipient can only see the conversation on their mobile app, not the desktop app. The conversation also appears as a separate conversation from the text conversation you may have previously had with that contact.