The icons are located in the footer. The footer is build up out of 3 rows, 2 of them have a buttun app installed, presented with icons and text. 1 row has the icon app installed, this is the one showed on the printscreen.
It works fine in all gridbix pages, but if I visit pages from the Joomla system itself, like "login", "profile", and "signup", then the icons shows themselves all scrambled. The icons in the buttun app shows themselves correctly.
This is recently, I never saw it before. As I mentioned before, I tried to load the page with clean cache and without browser cookies. I loaded the page without custom css codes. I tried different icons in the icon app. I replaced the icon app for another app to see if it also would show any deviant behavior, but it worked fine. I don't know what else I can try. Thank you.