Power Apps Portal Basic Form buttons icon not displayed

[VladimirNether]

Hi Community,

I have a PowerApps Portal, I have created a new list and new basic form, however for some reason the buttons Edit and some other icons are not displayed. Instead some squares are shown, like so: □ 

However this is only on my dialogs , the rest of Portal works correct, and the grid shows nice buttons for Menu:

have anyone seen something similar?

[OliverRodrigues]

this seems to be a CSS issue.. did you make any recent CSS changes? might be worth reverting back to the original and testing it out 

sometimes that happens to me when I have the developer tools open.. then just by closing the DEV tools + refresh the page it works fine