I have been trying to find the best way to automatically send an email that includes a link to the file location WITHIN TEAMS (not sharepoint) when a file is added to a channel in one of the teams I manage. The closest I get is creating a flow that sends an email to team members with a link to the file that opens in Sharepoint. We have some employees that are not as comfortable with technology and Teams, so making this as simple as possible and opening it within the Team and Channel versus Sharepoint is key.
It seems this feature is not possible for now. I was unable to reproduce it at my end.
Unless others have an idea, feel free to visit https://microsoftteams.uservoice.com/ where you can provide your suggestion and feedback. The development team continuously monitors this portal. If Microsoft ever pick it, you will get notified.