Is there a way to exit picture preview from a git lab issue page?

For example, in this issue there is a picture: #348555 (closed)

If one click the picture to preview, I can't find a way to exit preview, there is no exit button, and Esc doesn't work, the only way is the brower's Backbutton, but that will re-render the original issue page

Not sure if I am missing anything obvious?