Below unit test fails with the latest build on my macBook pro with macOS 10.15.7 if non US locale is set : (I tested with German locale)

> Task :controls:test

test.javafx.scene.control.SpinnerTest > test_jdk_8150946_testCommit_valid FAILED
    junit.framework.AssertionFailedError: expected:<2.5> but was:<2.0>
        at junit.framework.Assert.fail(Assert.java:47)
        at junit.framework.Assert.failNotEquals(Assert.java:283)
        at junit.framework.Assert.assertEquals(Assert.java:64)
        at junit.framework.Assert.assertEquals(Assert.java:71)
        at test.javafx.scene.control.SpinnerTest.test_jdk_8150946_testCommit_valid(SpinnerTest.java:1319)

test.javafx.scene.control.SpinnerTest > dblSpinner_testToString_valueInRange FAILED
    junit.framework.ComparisonFailure: null expected:<0[.]3> but was:<0[,]3>
        at junit.framework.Assert.assertEquals(Assert.java:81)
        at junit.framework.Assert.assertEquals(Assert.java:87)
        at test.javafx.scene.control.SpinnerTest.dblSpinner_testToString_valueInRange(SpinnerTest.java:618)

test.javafx.scene.control.SpinnerTest > dblSpinner_testFromString_valueInRange FAILED
    junit.framework.AssertionFailedError: expected:<0.3> but was:<0.0>
        at junit.framework.Assert.fail(Assert.java:47)
        at junit.framework.Assert.failNotEquals(Assert.java:283)
        at junit.framework.Assert.assertEquals(Assert.java:64)
        at junit.framework.Assert.assertEquals(Assert.java:71)
        at test.javafx.scene.control.SpinnerTest.dblSpinner_testFromString_valueInRange(SpinnerTest.java:626)

test.javafx.scene.control.SpinnerTest > test_jdk_8150946_testCancel FAILED
    junit.framework.ComparisonFailure: null expected:<2[.]5> but was:<2[,]5>
        at junit.framework.Assert.assertEquals(Assert.java:81)
        at junit.framework.Assert.assertEquals(Assert.java:87)
        at test.javafx.scene.control.SpinnerTest.test_jdk_8150946_testCancel(SpinnerTest.java:1345)

test.javafx.scene.control.ControlTest > testRT18097 FAILED
    java.lang.AssertionError: javafx.scene.control.DatePicker -fx-show-week-numbers expected:<false> but was:<true>
        at org.junit.Assert.fail(Assert.java:91)
        at org.junit.Assert.failNotEquals(Assert.java:645)
        at org.junit.Assert.assertEquals(Assert.java:126)
        at test.javafx.scene.control.ControlTest.checkClass(ControlTest.java:1049)
        at test.javafx.scene.control.ControlTest.checkDirectory(ControlTest.java:1080)
        at test.javafx.scene.control.ControlTest.recursiveCheck(ControlTest.java:1092)
        at test.javafx.scene.control.ControlTest.recursiveCheck(ControlTest.java:1095)
        at test.javafx.scene.control.ControlTest.recursiveCheck(ControlTest.java:1095)
        at test.javafx.scene.control.ControlTest.testRT18097(ControlTest.java:1007)

7952 tests completed, 5 failed, 194 skipped