The following test failed on localized Windows platform:

* tools/launcher/FXLauncherTest.java
* tools/launcher/HelpFlagsTest.java
* tools/launcher/MainClassAttributeTest.java
* tools/launcher/MainClassCantBeLoadedTest.java
* tools/launcher/SourceMode.java
* tools/launcher/TestSpecialArgs.java

The environment in which I ran tests is as follows:
OS: Windows 10
Locale: ja

Here's a snippet from the log file of FXLauncherTest.java:

test# 13: abort on missing Main-Class
JavaFX-Application-Class: helloworld.HelloWorld
renaming fxtest.jar to testMissingMC-13-fxtest.jar
FAIL: testMissingMC:13 : test with helloworld.HelloWorld
Test static void FXLauncherTest.testMissingMC() throws java.lang.Exception failed: java.lang.reflect.InvocationTargetException
----begin detailed exceptions----
java.lang.reflect.InvocationTargetException
        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 TestHelper.run(TestHelper.java:200)
        at FXLauncherTest.main(FXLauncherTest.java:451)
        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)
Caused by: java.lang.Exception: Failed: testMissingMC:13
        at FXLauncherTest.checkStatus(FXLauncherTest.java:201)
        at FXLauncherTest.testMissingMC(FXLauncherTest.java:380)
        ... 12 more
----end detailed exceptions----