bg image in color sections

Hi,

on http://www.musikzentrale.net i do make heavy use of color sections with parallax bg images. with update to 3.07, bg images do not appear in the current chrome version (yosemite, 40+), all other browsers work as supposed to do. some of the images show up as i scroll, but disaapear without any further action, clearing cash etc. did not do any better.

is there a solution in sight?

Thanks for your kind advice,
Sebastian.