Unwrap border before checking if it is a VisualPaddingProvider.

core/src/main/java/com/github/weisj/darklaf/ui/VisualPaddingProvider.java

@@ -27,6 +27,7 @@ import javax.swing.*;
 import javax.swing.border.Border;
 import javax.swing.plaf.InsetsUIResource;
 
+import com.github.weisj.darklaf.util.DarkUIUtil;
 import com.github.weisj.darklaf.util.PropertyUtil;
 
 public interface VisualPaddingProvider {
@@ -36,7 +37,7 @@ public interface VisualPaddingProvider {
     Insets getVisualPaddings(Component component);
 
     static void updateProperty(final JComponent c) {
-        Border b = c.getBorder();
+        Border b = DarkUIUtil.getUnwrappedBorder(c);
         if (b instanceof VisualPaddingProvider) {
             Insets ins = ((VisualPaddingProvider) b).getVisualPaddings(c);
             PropertyUtil.installProperty(c, VISUAL_PADDING_PROP,

core/src/main/java/com/github/weisj/darklaf/util/DarkUIUtil.java

@@ -35,6 +35,7 @@ import java.util.function.Predicate;
 
 import javax.swing.*;
 import javax.swing.border.Border;
+import javax.swing.border.CompoundBorder;
 import javax.swing.plaf.ComponentUI;
 import javax.swing.plaf.InsetsUIResource;
 import javax.swing.table.TableCellEditor;
@@ -60,6 +61,14 @@ public final class DarkUIUtil {
     private static final Rectangle iconRect = new Rectangle();
     private static final Rectangle textRect = new Rectangle();
 
+    public static Border getUnwrappedBorder(final JComponent c) {
+        Border b = c.getBorder();
+        while (b instanceof CompoundBorder) {
+            b = ((CompoundBorder) b).getOutsideBorder();
+        }
+        return b;
+    }
+
     public static Rectangle applyInsets(final Rectangle rect, final Insets insets) {
         if (insets != null && rect != null) {
             rect.x += insets.left;