Unable to close storyboard sheet segue

[37Shannon]

I'm learning how to do some Swift coding using Xcode 12, and the exercise I'm doing now shows how to add a second window and view controller to a project and create a segue between the first view controller and the second. The issue is, when I choose the "sheet" segue, when the sheet displays, the red close-this-window button is greyed out, leaving only the yellow minimize and green maximize buttons to use. Because of this, I can't close the sheet to return to my first window view. When I choose other segue formats, the problem does not occur.

Xcode 8 did not do this. Does anyone have any ideas or workarounds? TIA!

 

[Cory Cooper]

Hello,

Sorry, I have zero experience with Swift. Hope fully someone else will chime in with some suggestions.

C