diff --git a/projects/igniteui-angular/src/lib/core/styles/components/grid/_grid-theme.scss b/projects/igniteui-angular/src/lib/core/styles/components/grid/_grid-theme.scss
index ea0c4afba7a..dbaa11cf01d 100644
--- a/projects/igniteui-angular/src/lib/core/styles/components/grid/_grid-theme.scss
+++ b/projects/igniteui-angular/src/lib/core/styles/components/grid/_grid-theme.scss
@@ -770,7 +770,7 @@
         }
 
         outline-style: none;
-        z-index: auto;
+        z-index: 1;
 
         %cbx-display {
             min-width: $cbx-size;