Listing image stretched full screen

Hello there.
I’m using Business Directory theme, WP 4.1.1. All plugins disabled. I am using one of the child themes. Test user adding an image to their listing, the image has two issues.

1. When you click on the full screen the image is distorted and is resizing it 1944px x 500px (stretched image 1944×500.jpg). I’ve tried changing to auto, using percentage but can’t get it working.

2. in the first popup window that displays this image, there are the Tweet and Facebook share icons and one little curly brace to the right of the FB icon – anyone tell me where that extra brace is so I can get rid of it? (my listing curly brace.jpg)

Thank you!