I can confirm that this is indeed not reproducible in current Ubuntu 15.04 daily.
eog 3.14.3-1ubuntu2 (vivid)
light-themes 14.04+15.04.20150212-0ubuntu1
I can confirm that this is indeed not reproducible in current Ubuntu 15.04 daily.
eog 3.14.3-1ubuntu2 (vivid)
light-themes 14.04+15. 04.20150212- 0ubuntu1