Google Cloud Storage getImageServingUrl returns the wrong image -

i using google cloud storage store user uploaded images. use google app engine api php function create url serve image through google service.

cloudstoragetools::getimageservingurl($image_file, $options); 

this service returns public url image. url takes arguments can appended end of url, allows me return different versions of image. resized or cropped version of image.

my problem service not return correct image.

let me give example:

this url returned service. problem not correct image. not 1 of images. http://lh3.googleusercontent.com/2obrlam8fzbudm1byp8fgazhewvsg2plxrwwu2k3vncn-djwywl41w2vnazgfnlehrj-u4kgssoekpoduz8qpro9xnxrcaoomrnzabsx6wmf

if append arguments @ end of url, example =w800 should give me resized version of image width of 800px, service returns correct image. https://lh3.googleusercontent.com/2obrlam8fzbudm1byp8fgazhewvsg2plxrwwu2k3vncn-djwywl41w2vnazgfnlehrj-u4kgssoekpoduz8qpro9xnxrcaoomrnzabsx6wmf=w800

until have discovered problem on 3 images. find alarming service returning else's images.

have of experienced simular problem?

i bit worried problem, since hoping use service in ios , android app developing @ company. know problem not related caching on computer since happening on multiple computers , mobile devices.