Why do some tumblrs not open in an own window?

Why do some tumblrs not open in an own window?

Andrewkaiserphoto: Working With A Break In The Summer Heat. Photographed With A Rolleiflex Tlr And Some Lovely Ilford Delta 400 Film. Do You Like This Image? See More On Patreon!

My-Secret-Eye: Kuniyoshi Kaneko

Gacougnol: Claude Andreinithe Cascade (From The Ombres Nues Series). 1998

Kyotocat: The Ancients Kyotocat | @Fotokammer

Vicky By Lukas Dvorak

My-Secret-Eye: Jeanloup Sieff, Back With A Breast, 1979

Killerbeesting: Brassaï, In Den Folies-Bergères, 1931-32

Kyotocat: Kyotocat | Daniel Bauer

Afroui: Ralph Gibson

Swanngalleries: Lee Friedlander Nude 1981.

Giftvintage: Frantisek Drtikol (1883-1961) Circa 1930

Micaelanavarroph: Self Portrait Micaela Navarro

Sashagrey SauceForGif