diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e9b8aa99..60a2ce19 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -34,6 +34,7 @@ jobs:
       - uses: actions/checkout@v2
 
       - uses: gradle/wrapper-validation-action@v1
+        if: matrix.java == '1.8'
 
       - name: Setup Java ${{ matrix.java }}
         uses: actions/setup-java@v1
diff --git a/CHANGELOG.md b/CHANGELOG.md
index dc868857..8d15eca2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -59,8 +59,13 @@ FlatLaf Change Log
     `InputStream`. (issues #419 and #325)
   - `FlatSVGUtils`: Support loading SVG from `URL` (for JPMS). (issue #325)
 
+
+## 1.6.3
+
 #### Fixed bugs
 
+- ComboBox (not editable): Fixed regression in FlatLaf 1.6.2 that may display
+  text in non-editable combo boxes in bold. (issue #423)
 - Tree: Fixed editing cell issue with custom cell renderer and cell editor that
   use same component for rendering and editing. (issue #385)
 
diff --git a/build.gradle.kts b/build.gradle.kts
index d1401962..d9b018d8 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-val releaseVersion = "1.6.2"
+val releaseVersion = "1.6.3"
 val developmentVersion = "2.0-SNAPSHOT"
 
 version = if( java.lang.Boolean.getBoolean( "release" ) ) releaseVersion else developmentVersion
diff --git a/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatComboBoxUI.java b/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatComboBoxUI.java
index 89352d87..e6cc5773 100644
--- a/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatComboBoxUI.java
+++ b/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatComboBoxUI.java
@@ -575,22 +575,6 @@ public class FlatComboBoxUI
 	@Override
 	@SuppressWarnings( "unchecked" )
 	public void paintCurrentValue( Graphics g, Rectangle bounds, boolean hasFocus ) {
-		// apply clipping using rounded rectangle to avoid that renderer paints
-		// outside of border if combobox uses larger arc for edges
-		// (e.g. FlatClientProperties.COMPONENT_ROUND_RECT is true)
-		FlatBorder border = FlatUIUtils.getOutsideFlatBorder( comboBox );
-		if( border != null ) {
-			int clipArc = border.getArc( comboBox ) - (border.getLineWidth( comboBox ) * 2);
-			if( clipArc > 0 ) {
-				int x = bounds.x;
-				int width = bounds.width + bounds.height;
-				if( !comboBox.getComponentOrientation().isLeftToRight() )
-					x -= bounds.height;
-				((Graphics2D)g).clip( FlatUIUtils.createComponentRectangle(
-					x, bounds.y, width, bounds.height, scale( (float) clipArc ) ) );
-			}
-		}
-
 		paddingBorder.uninstall();
 
 		ListCellRenderer<Object> renderer = comboBox.getRenderer();
@@ -604,11 +588,23 @@ public class FlatComboBoxUI
 		c.setBackground( getBackground( enabled ) );
 		c.setForeground( getForeground( enabled ) );
 
+		// make renderer component temporary non-opaque to avoid that renderer paints
+		// background outside of border if combobox uses larger arc for edges
+		// (e.g. FlatClientProperties.COMPONENT_ROUND_RECT is true)
+		boolean oldOpaque = true;
+		if( c instanceof JComponent ) {
+			oldOpaque = ((JComponent)c).isOpaque();
+			((JComponent)c).setOpaque( false );
+		}
+
 		boolean shouldValidate = (c instanceof JPanel);
 
 		paddingBorder.install( c );
 		currentValuePane.paintComponent( g, c, comboBox, bounds.x, bounds.y, bounds.width, bounds.height, shouldValidate );
 		paddingBorder.uninstall();
+
+		if( c instanceof JComponent )
+			((JComponent)c).setOpaque( oldOpaque );
 	}
 
 	@Override
diff --git a/flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatCustomBordersTest.java b/flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatCustomBordersTest.java
index fecc5730..2d2bd064 100644
--- a/flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatCustomBordersTest.java
+++ b/flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/FlatCustomBordersTest.java
@@ -34,7 +34,7 @@ public class FlatCustomBordersTest
 	private static final Color RED = new Color( 0x60ff0000, true );
 	private static final Color GREEN = new Color( 0x6000ff00, true );
 	private static final Color MAGENTA = new Color( 0x60ff00ff, true );
-	private static final Color ORANGE = new Color( 0x60ffc800, true );
+	private static final Color BLUE = new Color( 0x300000ff, true );
 
 	public static void main( String[] args ) {
 		SwingUtilities.invokeLater( () -> {
@@ -127,7 +127,7 @@ public class FlatCustomBordersTest
 	@SuppressWarnings( "unchecked" )
 	private void applySpecialComboBoxRenderers() {
 		BasicComboBoxRenderer sharedRenderer = new BasicComboBoxRenderer();
-		sharedRenderer.setBorder( new LineBorder( ORANGE, UIScale.scale( 2 ) ) );
+		sharedRenderer.setBorder( new LineBorder( BLUE, UIScale.scale( 2 ) ) );
 		comboBox29.setRenderer( sharedRenderer );
 		comboBox30.setRenderer( sharedRenderer );
 
@@ -160,7 +160,7 @@ public class FlatCustomBordersTest
 	}
 
 	private void applyCustomComboBoxEditorBorder( JComboBox<String> comboBox ) {
-		applyCustomComboBoxEditorBorder( comboBox, new LineBorder( ORANGE, UIScale.scale( 6 ) ) );
+		applyCustomComboBoxEditorBorder( comboBox, new LineBorder( BLUE, UIScale.scale( 6 ) ) );
 	}
 
 	private void applyCustomComboBoxEditorBorderWithIcon( JComboBox<String> comboBox ) {
@@ -180,7 +180,7 @@ public class FlatCustomBordersTest
 	}
 
 	private void applyCustomComboBoxRendererBorder( JComboBox<String> comboBox ) {
-		applyCustomComboBoxRendererBorder( comboBox, new LineBorder( ORANGE, UIScale.scale( 6 ) ) );
+		applyCustomComboBoxRendererBorder( comboBox, new LineBorder( BLUE, UIScale.scale( 6 ) ) );
 	}
 
 	private void applyCustomComboBoxRendererBorderWithIcon( JComboBox<String> comboBox ) {