Div having contentEditable and display:grid cannot be edited if it is empty.

Source/core/rendering/RenderGrid.cpp

Index: Source/core/rendering/RenderGrid.cpp
diff --git a/Source/core/rendering/RenderGrid.cpp b/Source/core/rendering/RenderGrid.cpp
index 008cae430100375bc399711e98d2a9d33349da0e..3a9960fb2da3b00977f012759dcd7d3e27ac731a 100644
--- a/Source/core/rendering/RenderGrid.cpp
+++ b/Source/core/rendering/RenderGrid.cpp
@@ -1150,9 +1150,12 @@ void RenderGrid::layoutGridItems()
     for (const auto& row : sizingData.rowTracks)
         setLogicalHeight(logicalHeight() + row.baseSize());
 
-    // Min / max logical height is handled by the call to updateLogicalHeight in layoutBlock.
+    LayoutUnit height = logicalHeight() + borderAndPaddingLogicalHeight();
+    if (hasLineIfEmpty())
+        height = std::max(height, minimumLogicalHeightForEmptyLine());
 
-    setLogicalHeight(logicalHeight() + borderAndPaddingLogicalHeight());
+    // Min / max logical height is handled by the call to updateLogicalHeight in layoutBlock.
+    setLogicalHeight(height);
 }
 
 void RenderGrid::layoutPositionedObjects(bool relayoutChildren, PositionedLayoutBehavior info)