pswp--open keeps opened (not visible) but I cannot click on the screen after closing

If I reload my site and create a new gallery, when opening an image, the pswp--open div remains opened and I cannot interact with the page anymore. I noticed that if I inspected the element and remove the dislpay:block style from the element it works again, what could be the issue?

http://134.209.196.106/photos/animal/african-buffalo

.pswp--open { display: block; }