Hi,
I have upgraded Radzen.Blazor from version 3.20.8 to version 4.6.2.
Now the icons in the filter menus don't show anymore and it displays text instead, I am using the advanced filter menu.
It renders like this now without icons.
Try to clear your browser cache.
I tried clearing browser cache and tested on multiple browsers, didn't work.
I'm afraid that I've never seen such problem before and cannot help much. Make sure that the CSS for Radzen.Blazor is defined according to our "Getting started" article.