The test fails on linux-i586, Gnome/Metacity 2.24 with the current JDK 7 (~ b59):
The test also leaves a modifier key (Shift) in the pressed state.
The .jtr file is attached.

----------System.err:(20/1458)----------
java.lang.RuntimeException: Test failed : Pressed. modifiersEx != curStandardExModifiers
at MessageLogger.reportError(MouseModifiersUnitTest_Extra.java:487)
at MouseModifiersUnitTest_Extra.checkPressedModifiersTest(MouseModifiersUnitTest_Extra.java:59)
at CheckingModifierAdapter.mousePressed(MouseModifiersUnitTest_Extra.java:450)
at java.awt.Component.processMouseEvent(Component.java:6267)
at java.awt.Component.processEvent(Component.java:6035)
at java.awt.Container.processEvent(Container.java:2084)
at java.awt.Window.processEvent(Window.java:1930)
at java.awt.Component.dispatchEventImpl(Component.java:4630)
at java.awt.Container.dispatchEventImpl(Container.java:2142)
at java.awt.Window.dispatchEventImpl(Window.java:2612)
at java.awt.Component.dispatchEvent(Component.java:4456)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:605)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:286)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:191)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:186)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:178)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:139)
STATUS:Failed.`main' threw exception: java.lang.RuntimeException: Test failed : Pressed. modifiersEx != curStandardExModifiers
result: Failed. Execution failed: `main' threw exception: java.lang.RuntimeException: Test failed : Pressed. modifiersEx != curStandardExModifiers


test result: Failed. Execution failed: `main' threw exception: java.lang.RuntimeException: Test failed : Pressed. modifiersEx != curStandardExModifiers