shell/elements: Fix corners order for clipping/shadows

src/backend/render/shadow.rs

@@ -82,6 +82,12 @@ impl ShadowShader {
             let offset = [0., 5.];
             let color = [0., 0., 0., 0.45];
             let radius = radius.map(|r| ceil(r as f64));
+            let radius = [
+                radius[3], // top_left
+                radius[1], // top_right
+                radius[0], // bottom_right
+                radius[2], // bottom_left
+            ];
 
             let width = softness;
             let sigma = width / 2.;