IDEA-86601 Bug with linkage type rendering

platform/platform-api/src/com/intellij/openapi/ui/ComboBoxTableRenderer.java

@@ -25,6 +25,7 @@ import com.intellij.util.ui.UIUtil;
 import org.jetbrains.annotations.NotNull;
 
 import javax.swing.*;
+import javax.swing.border.EmptyBorder;
 import javax.swing.event.CellEditorListener;
 import javax.swing.event.ChangeEvent;
 import javax.swing.event.EventListenerList;
@@ -54,6 +55,7 @@ public class ComboBoxTableRenderer<T> extends JLabel implements TableCellRendere
   public ComboBoxTableRenderer(final T[] values) {
     myValues = values;
     setFont(UIUtil.getButtonFont());
+    setBorder(new EmptyBorder(0, 5, 0, 5));
   }
 
   @Override

platform/platform-api/src/com/intellij/ui/components/editors/JBComboBoxTableCellEditorComponent.java

@@ -16,6 +16,7 @@
 package com.intellij.ui.components.editors;
 
 import com.intellij.openapi.ui.popup.JBPopupFactory;
+import com.intellij.openapi.util.Computable;
 import com.intellij.openapi.util.text.StringUtil;
 import com.intellij.ui.TableUtil;
 import com.intellij.ui.awt.RelativePoint;
@@ -150,7 +151,14 @@ public class JBComboBoxTableCellEditorComponent extends JBLabel {
           myTable.setValueAt(myValue, myRow, myColumn); // on Mac getCellEditorValue() called before myValue is set.
           myTable.tableChanged(new TableModelEvent(myTable.getModel(), myRow));  // force repaint
         }
-      })      
+      })
+      .setCancelCallback(new Computable<Boolean>() {
+        @Override
+        public Boolean compute() {
+          TableUtil.stopEditing(myTable);
+          return true;
+        }
+      })
       .createPopup()
       .show(new RelativePoint(myTable, point));
   }