diff --git a/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatOptionPaneUI.java b/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatOptionPaneUI.java
index ae36668f..46e8294a 100644
--- a/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatOptionPaneUI.java
+++ b/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatOptionPaneUI.java
@@ -19,9 +19,7 @@ package com.formdev.flatlaf.ui;
 import java.awt.Component;
 import java.awt.Container;
 import java.awt.Dimension;
-import java.awt.Graphics;
 import java.awt.GridBagConstraints;
-import java.awt.Insets;
 import java.beans.PropertyChangeListener;
 import javax.swing.Box;
 import javax.swing.BoxLayout;
@@ -230,7 +228,7 @@ public class FlatOptionPaneUI
 				// use non-UIResource borders to avoid that they are replaced when switching LaF
 				Border border = panel.getBorder();
 				if( border instanceof UIResource )
-					panel.setBorder( new NonUIResourceBorder( border ) );
+					panel.setBorder( FlatUIUtils.nonUIResource( border ) );
 			}
 
 			if( child instanceof Container )
@@ -256,31 +254,4 @@ public class FlatOptionPaneUI
 	protected boolean getSizeButtonsToSameWidth() {
 		return sameSizeButtons;
 	}
-
-	//---- class NonUIResourceBorder ------------------------------------------
-
-	private static class NonUIResourceBorder
-		implements Border
-	{
-		private final Border delegate;
-
-		NonUIResourceBorder( Border delegate ) {
-			this.delegate = delegate;
-		}
-
-		@Override
-		public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
-			delegate.paintBorder( c, g, x, y, width, height );
-		}
-
-		@Override
-		public Insets getBorderInsets( Component c ) {
-			return delegate.getBorderInsets( c );
-		}
-
-		@Override
-		public boolean isBorderOpaque() {
-			return delegate.isBorderOpaque();
-		}
-	}
 }
diff --git a/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTitlePane.java b/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTitlePane.java
index 8b2384fd..88467261 100644
--- a/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTitlePane.java
+++ b/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatTitlePane.java
@@ -360,7 +360,7 @@ public class FlatTitlePane
 
 		// show/hide icon
 		iconLabel.setVisible( hasIcon );
-		leftPanel.setBorder( hasIcon ? null : new FlatEmptyBorder( 0, noIconLeftGap, 0, 0 ) );
+		leftPanel.setBorder( hasIcon ? null : FlatUIUtils.nonUIResource( new FlatEmptyBorder( 0, noIconLeftGap, 0, 0 ) ) );
 
 		updateNativeTitleBarHeightAndHitTestSpotsLater();
 	}
diff --git a/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatUIUtils.java b/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatUIUtils.java
index 3adc07a7..2c5cd1b9 100644
--- a/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatUIUtils.java
+++ b/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatUIUtils.java
@@ -188,6 +188,11 @@ public class FlatUIUtils
 		return (font instanceof UIResource) ? font.deriveFont( font.getStyle() ) : font;
 	}
 
+	/** @since 2 */
+	public static Border nonUIResource( Border border ) {
+		return (border instanceof UIResource) ? new NonUIResourceBorder( border ) : border;
+	}
+
 	public static int minimumWidth( JComponent c, int minimumWidth ) {
 		return FlatClientProperties.clientPropertyInt( c, FlatClientProperties.MINIMUM_WIDTH, minimumWidth );
 	}
@@ -982,4 +987,31 @@ debug*/
 				repaintComponent.repaint();
 		}
 	}
+
+	//---- class NonUIResourceBorder ------------------------------------------
+
+	private static class NonUIResourceBorder
+		implements Border
+	{
+		private final Border delegate;
+
+		NonUIResourceBorder( Border delegate ) {
+			this.delegate = delegate;
+		}
+
+		@Override
+		public void paintBorder( Component c, Graphics g, int x, int y, int width, int height ) {
+			delegate.paintBorder( c, g, x, y, width, height );
+		}
+
+		@Override
+		public Insets getBorderInsets( Component c ) {
+			return delegate.getBorderInsets( c );
+		}
+
+		@Override
+		public boolean isBorderOpaque() {
+			return delegate.isBorderOpaque();
+		}
+	}
 }