To reproduce:

$ gradle sdk shims
$ gradle -PTEST_ONLY=true -PFULL_TEST=true -PUSE_ROBOT=true :systemTests:test --tests test.javafx.scene.Snapshot2Test

Several of the tests will fail, and then it will crash.

Here are the failures:

Snapshot2Test > [0] > testSnapshot2x2TilesDifferentSizeImm[0] FAILED
    java.lang.AssertionError
        at org.junit.Assert.fail(Assert.java:87)
        at org.junit.Assert.assertTrue(Assert.java:42)
        at org.junit.Assert.assertTrue(Assert.java:53)
        at test.javafx.scene.Snapshot2Test.lambda$doTestTiledSnapshotImm$12(Snapshot2Test.java:378)

Snapshot2Test > [0] > testSnapshot1x2TilesDifferentSizeImm[0] FAILED
    java.lang.AssertionError
        at org.junit.Assert.fail(Assert.java:87)
        at org.junit.Assert.assertTrue(Assert.java:42)
        at org.junit.Assert.assertTrue(Assert.java:53)
        at test.javafx.scene.Snapshot2Test.lambda$doTestTiledSnapshotImm$12(Snapshot2Test.java:378)

Snapshot2Test > [0] > testSnapshot1x2TilesDifferentSizeDefer[0] FAILED
    java.lang.AssertionError
        at org.junit.Assert.fail(Assert.java:87)
        at org.junit.Assert.assertTrue(Assert.java:42)
        at org.junit.Assert.assertTrue(Assert.java:53)
        at test.javafx.scene.Snapshot2Test.lambda$doTestTiledSnapshotDefer$13(Snapshot2Test.java:394)

Snapshot2Test > [0] > testSnapshot2x2TilesDifferentSizeDefer[0] FAILED
    java.lang.AssertionError
        at org.junit.Assert.fail(Assert.java:87)
        at org.junit.Assert.assertTrue(Assert.java:42)
        at org.junit.Assert.assertTrue(Assert.java:53)
        at test.javafx.scene.Snapshot2Test.lambda$doTestTiledSnapshotDefer$13(Snapshot2Test.java:394)

Snapshot2Test > [0] > testSnapshot2x1TilesDifferentSizeDefer[0] FAILED
    java.lang.AssertionError
        at org.junit.Assert.fail(Assert.java:87)
        at org.junit.Assert.assertTrue(Assert.java:42)
        at org.junit.Assert.assertTrue(Assert.java:53)
        at test.javafx.scene.Snapshot2Test.lambda$doTestTiledSnapshotDefer$13(Snapshot2Test.java:394)

Snapshot2Test > [0] > testSnapshot2x2TilesSameHeightImm[0] FAILED
    java.lang.AssertionError
        at org.junit.Assert.fail(Assert.java:87)
        at org.junit.Assert.assertTrue(Assert.java:42)
        at org.junit.Assert.assertTrue(Assert.java:53)
        at test.javafx.scene.Snapshot2Test.lambda$doTestTiledSnapshotImm$12(Snapshot2Test.java:378)

#
# A fatal error has been detected by the Java Runtime Environment:
#
# SIGSEGV (0xb) at pc=0x000000018fe9dc20, pid=80383, tid=33539
#
# JRE version: Java(TM) SE Runtime Environment (21.0.2+13) (build 21.0.2+13-LTS-58)
# Java VM: Java HotSpot(TM) 64-Bit Server VM (21.0.2+13-LTS-58, mixed mode, sharing, tiered, compressed oops, compressed class ptrs, g1 gc, bsd-aarch64)
# Problematic frame:
# C [libobjc.A.dylib+0x9c20] objc_msgSend+0x20
#
# No core dump will be written. Core dumps have been disabled. To enable core dumping, try "ulimit -c unlimited" before starting Java again
#
# An error report file with more information is saved as:
# /Users/kcr/dev/javafx/jfx-metal/jfx/rt/tests/system/hs_err_pid80383.log
#
# If you would like to submit a bug report, please visit:
# https://bugreport.java.com/bugreport/crash.jsp
# The crash happened outside the Java Virtual Machine in native code.
# See problematic frame for where to report the bug.
#

The hs_err file and crash log are attached.