diff --git a/libs/components/editor-blocks/src/blocks/grid/Grid.tsx b/libs/components/editor-blocks/src/blocks/grid/Grid.tsx
index 79ab22d0a..822270f49 100644
--- a/libs/components/editor-blocks/src/blocks/grid/Grid.tsx
+++ b/libs/components/editor-blocks/src/blocks/grid/Grid.tsx
@@ -261,7 +261,7 @@ const GridContainer = styled('div')<{
     display: 'flex',
     alignItems: 'stretch',
     borderRadius: '10px',
-    border: '1px solid #FFF',
+    border: '1px solid transparent',
     minWidth: `${gridItemMinWidth}%`,
     [`&:hover .${GRID_ITEM_CONTENT_CLASS_NAME}`]: {
         borderColor: theme.affine.palette.borderColor,
diff --git a/libs/components/editor-core/src/editor/selection/selection.ts b/libs/components/editor-core/src/editor/selection/selection.ts
index b66d1b5fd..30e7f4efd 100644
--- a/libs/components/editor-core/src/editor/selection/selection.ts
+++ b/libs/components/editor-core/src/editor/selection/selection.ts
@@ -77,9 +77,6 @@ export class SelectionManager implements VirgoSelection {
             type: 'None',
             info: null,
         };
-        // IMP: to delete
-        // @ts-ignore
-        window['selectionManager'] = this;
         this._initWindowSelectionChangeListen();
     }