chrome notification center icon is not displayed in the systray

opensuse 13.1 x86_64 , kde 4.14.0
chrome 37.0.2062.120 (64-bit)

with the 37 version chrome and hangouts icons are displayed again in the systray .

the notification center icon was never displayed and is not displayed with this new version .

i never received any notification about my photo albums , for example when a story is created by google with an album

is it a chrome bug or a compliancy pb between chrome and kde ?