The following 9 client tests failed in the JDK16 CI:

sun/java2d/DirectX/RenderingToCachedGraphicsTest/RenderingToCachedGraphicsTest.java
javax/swing/text/html/StyleSheet/bug4936917.java
javax/swing/text/html/CSS/4530474/bug4530474.java
javax/swing/text/CSSBorder/6796710/bug6796710.java
javax/swing/JRadioButton/8041561/bug8041561.java
javax/swing/JInternalFrame/8160248/JInternalFrameDraggingTest.java
java/awt/Menu/OpensWithNoGrab/OpensWithNoGrab.java
java/awt/image/multiresolution/MultiresolutionIconTest.java
java/awt/image/multiresolution/MenuMultiresolutionIconTest.java

The tests failed for a variety of reasons and I don't see any
obviously common reason for the failures. However, I really
don't want to file 9 individual bugs in client-libs.