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

Source/core/layout/LayoutGrid.cpp

Index: Source/core/layout/LayoutGrid.cpp
diff --git a/Source/core/layout/LayoutGrid.cpp b/Source/core/layout/LayoutGrid.cpp
index 11d580dec5ceb9a71ce0bda5db20318228fc28cb..1a4b7e4c27419a4032105e776454e65ef6ef184e 100644
--- a/Source/core/layout/LayoutGrid.cpp
+++ b/Source/core/layout/LayoutGrid.cpp
@@ -1162,9 +1162,12 @@ void LayoutGrid::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 LayoutGrid::layoutPositionedObjects(bool relayoutChildren, PositionedLayoutBehavior info)