diff --git a/packages/core/src/data-editor/data-editor.tsx b/packages/core/src/data-editor/data-editor.tsx
index 4736b1099..01165ffd2 100644
--- a/packages/core/src/data-editor/data-editor.tsx
+++ b/packages/core/src/data-editor/data-editor.tsx
@@ -101,6 +101,7 @@ export interface RowMarkerOptions {
     theme?: Partial<Theme>;
     headerTheme?: Partial<Theme>;
     headerAlwaysVisible?: boolean;
+    headerDisabled?: boolean;
 }
 
 interface MouseState {
@@ -877,7 +878,7 @@ const DataEditorImpl: React.ForwardRefRenderFunction<DataEditorRef, DataEditorPr
     const rowMarkerTheme = rowMarkersObj?.theme ?? p.rowMarkerTheme;
     const headerRowMarkerTheme = rowMarkersObj?.headerTheme;
     const headerRowMarkerAlwaysVisible = rowMarkersObj?.headerAlwaysVisible;
-    const headerRowMarkerDisabled = rowSelect !== "multi";
+    const headerRowMarkerDisabled = rowSelect !== "multi" || rowMarkersObj?.headerDisabled === true;
     const rowMarkerCheckboxStyle = rowMarkersObj?.checkboxStyle ?? "square";
 
     const minColumnWidth = Math.max(minColumnWidthIn, 20);
@@ -1899,7 +1900,7 @@ const DataEditorImpl: React.ForwardRefRenderFunction<DataEditorRef, DataEditorPr
                 if (hasRowMarkers && col === 0) {
                     lastSelectedRowRef.current = undefined;
                     lastSelectedColRef.current = undefined;
-                    if (rowSelect === "multi") {
+                    if (!headerRowMarkerDisabled && rowSelect === "multi") {
                         if (selectedRows.length !== rows) {
                             setSelectedRows(CompactSelection.fromSingleSelection([0, rows]), undefined, isMultiKey);
                         } else {
diff --git a/packages/core/src/internal/data-grid/data-grid.tsx b/packages/core/src/internal/data-grid/data-grid.tsx
index 52338a786..983820c4d 100644
--- a/packages/core/src/internal/data-grid/data-grid.tsx
+++ b/packages/core/src/internal/data-grid/data-grid.tsx
@@ -915,7 +915,7 @@ const DataGrid: React.ForwardRefRenderFunction<DataGridRef, DataGridProps> = (p,
     const [overFill, setOverFill] = React.useState(false);
 
     const [hCol, hRow] = hoveredItem ?? [];
-    const headerHovered = hCol !== undefined && hRow === -1;
+    const headerHovered = hCol !== undefined && hRow === -1 && columns[hCol].headerRowMarkerDisabled !== true;
     const groupHeaderHovered = hCol !== undefined && hRow === -2;
     let clickableInnerCellHovered = false;
     let editableBoolHovered = false;
@@ -940,6 +940,7 @@ const DataGrid: React.ForwardRefRenderFunction<DataGridRef, DataGridProps> = (p,
         : headerHovered || clickableInnerCellHovered || editableBoolHovered || groupHeaderHovered
         ? "pointer"
         : "default";
+    console.log("CURSOR", cursor, cursorOverride, headerHovered);
     const style = React.useMemo(
         () => ({
             // width,
diff --git a/packages/core/src/internal/data-grid/render/data-grid-render.header.ts b/packages/core/src/internal/data-grid/render/data-grid-render.header.ts
index 5828a4273..af7663548 100644
--- a/packages/core/src/internal/data-grid/render/data-grid-render.header.ts
+++ b/packages/core/src/internal/data-grid/render/data-grid-render.header.ts
@@ -77,7 +77,7 @@ export function drawGridHeaders(
             ctx.font = theme.baseFontFull;
         }
         const selected = selection.columns.hasIndex(c.sourceIndex);
-        const noHover = dragAndDropState !== undefined || isResizing;
+        const noHover = dragAndDropState !== undefined || isResizing || c.headerRowMarkerDisabled === true;
         const hoveredBoolean = !noHover && hRow === -1 && hCol === c.sourceIndex;
         const hover = noHover
             ? 0
diff --git a/setup-react-18-test.sh b/setup-react-18-test.sh
index f68e8f92a..18bab1a5e 100755
--- a/setup-react-18-test.sh
+++ b/setup-react-18-test.sh
@@ -1,3 +1,3 @@
 #!/bin/bash
 
-npm i -D react@latest react-dom@latest @testing-library/react@latest @testing-library/react-hooks@latest @testing-library/user-event@14.5.1 react-test-renderer@latest
\ No newline at end of file
+npm i -D react@latest react-dom@latest @testing-library/react@latest @testing-library/react-hooks@latest @testing-library/user-event@14.5.1 react-test-renderer@latest @testing-library/dom
\ No newline at end of file