Answer for Portfolio Modals Not Displaying Properly After Update

Kevin, thanks for the speedy reply! That resolves the modal issue fully! 
As a side note, the portfolio galleries no longer seem compatible with the Jetpack plugin. They were invisible (with just the navigation arrows appearing) until I deactivated Jetpack. I can’t think of why that would be, but I thought I would let you (and other users) know. Thanks again!