Problem with an effect on styles after upgrading to Radzen 5

Hi @Luar79,

Are you referring to the ripple effect? If so, it is built in the material themes by default, in accordance with the Material Design System. Here is one way to remove it - Radzen panel menu - #7 by korchev. Another option is to add this CSS to your styles:

.rz-navigation-item-link:not(.rz-state-disabled):before, 
.rz-menu-toggle:not(.rz-state-disabled):before {
    background: none !important;
}