Screenshot 2 shows the Kendo UI Grid with only the kendo.common.css stylesheet applied (i.e. no theme stylesheet), while screenshot 1 shows the Grid with absolutely no Kendo UI stylesheets applied.
There seems to be a problem with the CSS file registration, but it is highly unlikely to be related to Kendo UI, as the Kendo UI widgets do not take care of stylesheet loading. Please double-check the browser's requests and the server responses, and inspect the page HTML output with a DOM inspector.
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