Strange problem with genericons display in chrome/chromium

Hi all,

First of all kudos for the great Customizr theme and for all the people supporting it in this forum. Keep up the good work ??

I use genericons in the menu of my website. The genericons display ok in Firefox (both windows and linux). See this screenshot

However in Chrome the genericons are not displayed correctly (linux and android) or not at all (windows). But what baffles me even more is that the genericons in the ‘Reizen’ submenu are displayed correctly. See this screenshot

I’m using a child theme and have customized the style.css quite extensively. The CSS for the menu options are all quite similar, so I don’t comprehend the wrong display of the genericons in the main menu versus the correct display in the submenu.

Is this a problem with Chrome or with the CSS of Customizr ?

Thanks in advance for any suggestion to correct this problem.