java/awt/Toolkit/RealSync/Test.java failed with "Expected 'a' got 'A'."

The following test failed in the JDK18 CI:

java/awt/Toolkit/RealSync/Test.java

Here's a snippet from the log file:

#section:main
----------messages:(5/234)----------
command: main Test
reason: User specified action: run main/timeout=6000 Test
Mode: othervm
Additional options from @modules: --add-modules java.desktop --add-exports java.desktop/sun.awt=ALL-UNNAMED
elapsed time (seconds): 0.62
----------configuration:(4/101)----------
Boot Layer
  add modules: java.desktop
  add exports: java.desktop/sun.awt ALL-UNNAMED

----------System.out:(0/0)----------
----------System.err:(44/3365)----------
Test failed: testType
Cause: Expected 'a' got 'A'.
Cause: - Focus owner: java.awt.TextField[textfield0,8,31,184x161,text=A,editable,selection=1-1]
Cause: - Focused window: java.awt.Frame[frame0,100,100,200x200,layout=java.awt.BorderLayout,title=testType,resizable,normal]
Events:
java.awt.event.ContainerEvent[COMPONENT_ADDED,child=textfield0] on frame0
java.awt.event.ComponentEvent[COMPONENT_RESIZED (100,100 200x200)] on frame0
java.awt.event.ComponentEvent[COMPONENT_MOVED (100,100 200x200)] on frame0
java.awt.event.ComponentEvent[COMPONENT_RESIZED (8,31 184x161)] on textfield0
java.awt.event.ComponentEvent[COMPONENT_MOVED (8,31 184x161)] on textfield0
java.awt.event.WindowEvent[WINDOW_ACTIVATED,opposite=null,oldState=0,newState=0] on frame0
sun.awt.TimedWindowEvent[WINDOW_GAINED_FOCUS,opposite=null,oldState=0,newState=0] on frame0
java.awt.event.ComponentEvent[COMPONENT_RESIZED (100,100 200x200)] on frame0
java.awt.event.ComponentEvent[COMPONENT_MOVED (100,100 200x200)] on frame0
java.awt.event.ComponentEvent[COMPONENT_SHOWN] on frame0
java.awt.event.WindowEvent[WINDOW_OPENED,opposite=null,oldState=0,newState=0] on frame0
java.awt.event.FocusEvent[FOCUS_GAINED,permanent,opposite=null,cause=ACTIVATION] on textfield0
java.awt.event.PaintEvent[PAINT,updateRect=java.awt.Rectangle[x=8,y=31,width=184,height=161]] on frame0
java.awt.event.PaintEvent[PAINT,updateRect=java.awt.Rectangle[x=0,y=0,width=180,height=157]] on textfield0
java.awt.event.KeyEvent[KEY_PRESSED,keyCode=65,keyText=A,keyChar='A',keyLocation=KEY_LOCATION_STANDARD,rawCode=65,primaryLevelUnicode=97,scancode=30,extendedKeyCode=0x41] on textfield0
java.awt.event.KeyEvent[KEY_TYPED,keyCode=0,keyText=Unknown keyCode: 0x0,keyChar='A',keyLocation=KEY_LOCATION_UNKNOWN,rawCode=0,primaryLevelUnicode=0,scancode=0,extendedKeyCode=0x0] on textfield0
java.awt.event.KeyEvent[KEY_RELEASED,keyCode=65,keyText=A,keyChar='A',keyLocation=KEY_LOCATION_STANDARD,rawCode=65,primaryLevelUnicode=97,scancode=30,extendedKeyCode=0x41] on textfield0
java.awt.event.TextEvent[TEXT_VALUE_CHANGED] on textfield0
java.awt.event.PaintEvent[PAINT,updateRect=java.awt.Rectangle[x=0,y=0,width=180,height=16]] on textfield0
FAILURE MOMENT
java.awt.event.FocusEvent[FOCUS_LOST,permanent,opposite=null,cause=CLEAR_GLOBAL_FOCUS_OWNER] on textfield0
sun.awt.TimedWindowEvent[WINDOW_LOST_FOCUS,opposite=null,oldState=0,newState=0] on frame0
java.awt.event.WindowEvent[WINDOW_DEACTIVATED,opposite=null,oldState=0,newState=0] on frame0
java.awt.event.WindowEvent[WINDOW_CLOSED,opposite=null,oldState=0,newState=0] on frame0
java.lang.Error
at Test.reportErrors(Test.java:155)
at Test.run(Test.java:122)
at Test.main(Test.java:80)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:833)

JavaTest Message: Test threw exception: java.lang.Error
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.Error
----------rerun:(48/4708)*----------