I have a custom object for providing information about internal trainings to our users. I have added a Visualforce Page to create the the .ics file for being able to add the training to Outlook. In Classic, I was able to add this as a button on the page layout and it works well. However, in LEX (all our users are in LEX or an Employee Community), the button or if I add an action instead, it opens an "empty" window on top of the record (along with downloading the .ics file as expected). I've attached a screen shot of what I get when I click my button/action in LEX. Is there a way I can suppress this extra window from opening? Or, alternatively, is there a way I could control this extra window and would it require I move my VF page to a Lightning component instead?
