Regression introduced in R1 2022.
Reproducible in the demo: https://demos.telerik.com/aspnet-mvc/grid/search-panel
There is a difference in the rendering of the search panel.
MVC:
<span class="k-textbox k-grid-search k-display-flex">
<input autocomplete="off" class="k-input" placeholder="Search..." title="Search..." type="text">
<span class="k-input-icon">
<span class="k-icon k-i-search"></span>
</span>
</span>
Kendo UI for jQuery and Core:
<span class="k-searchbox k-input k-input-md k-rounded-md k-input-solid k-grid-search">
<span class="k-input-icon k-icon k-i-search"></span>
<input autocomplete="off" placeholder="Search..." title="Search..." class="k-input-inner">
</span>
As a result, in MVC the search panel's magnifying glass is displayed outside the input.
Additionally, the search panel's appearance in Kendo UI for jQuery and Core is different than the one in the previous versions. In R3 2021, the input is positioned on the left hand side of the Grid's toolbar and the magnifying glass appears at the right end of the input. In R2 2022, the input is positioned on the right side of the toolbar and the magnifying glass is displayed at the beginning of the input.
R3 2021 dojo
R1 2022 dojo
Positioning of the input within the toolbar and the magnifying glass icon within the input, to be as in R3 2021.