Opening new emails problem. Window coming up after I open as if I am trying to edit the incoming email.

When I open new received emails it opens in a new tab as it should but then a new window opens like I am trying to edit the new email. Every time I have to x it out and then click discard changes to get back to read my email. It is time consuming a frustrating. I have tried to fix this for a while however I can't seem to find anyone having the same problem. I have never reached out here so if there is further information that may help please let me know what you need. Thank you for your time.