Yeah that one did the trick. For future wanderers, at first I tried to uncheck the Inject Script however that did not have any effect without clearing off the browser caches. Thank you very much @Berny. Nevertheless, is there other possibility to solve this problem while keeping Inject script checked? I am asking because Inject script is actually useful when checked as it provides multiple functionalities. I thought of an app exception for google chrome to exclude ip address of the gmail, but could not find viable ip range of gmail services.