Hi, We have a integration test which hangs with Java 9 b159 under macOS 10.12.3. It does not hang with b157 and also works with Windows OS & b159. We can reproduce it always with our integration test.
I want to ask if this is already a known regression? Otherwise I can try to provide a simple test case to reproduce it but this would take some time. The relevant thread stacks are: "AWT-EventQueue-0" #13 prio=6 os_prio=31 tid=0x00007fa86ea7e000 nid=0xd203 runnable [0x0000700010632000] java.lang.Thread.State: RUNNABLE at sun.lwawt.macosx.CWrapper$NSWindow.isZoomed(java.desktop@9-ea/Native Method) at sun.lwawt.macosx.CPlatformWindow.isMaximized(java.desktop@9-ea/CPlatformWindow.java:509) at sun.lwawt.macosx.CPlatformWindow.setVisible(java.desktop@9-ea/CPlatformWindow.java:558) at sun.lwawt.LWWindowPeer.setVisibleImpl(java.desktop@9-ea/LWWindowPeer.java:253) at sun.lwawt.LWComponentPeer.setVisible(java.desktop@9-ea/LWComponentPeer.java:763) at java.awt.Component.hide(java.desktop@9-ea/Component.java:1705) - locked <0x00000007a48a2c20> (a java.awt.Component$AWTTreeLock) at java.awt.Window.hide(java.desktop@9-ea/Window.java:1118) at java.awt.Dialog.hide(java.desktop@9-ea/Dialog.java:1152) at java.awt.Window.hide(java.desktop@9-ea/Window.java:1110) - locked <0x00000007a802e218> (a java.util.Vector) at java.awt.Dialog.hide(java.desktop@9-ea/Dialog.java:1152) at java.awt.Component.show(java.desktop@9-ea/Component.java:1670) at java.awt.Component.setVisible(java.desktop@9-ea/Component.java:1615) at java.awt.Window.setVisible(java.desktop@9-ea/Window.java:1017) at java.awt.Dialog.setVisible(java.desktop@9-ea/Dialog.java:1005) "AppKit Thread" #11 daemon prio=5 os_prio=31 tid=0x00007fa87076b000 nid=0x307 waiting for monitor entry [0x00007fff5e87e000] java.lang.Thread.State: BLOCKED (on object monitor) at java.awt.Window.getOwnedWindows_NoClientCode(java.desktop@9-ea/Window.java:1478) - waiting to lock <0x00000007a802e218> (a java.util.Vector) at java.awt.Window$1.getOwnedWindows(java.desktop@9-ea/Window.java:4127) at sun.lwawt.macosx.CPlatformWindow.orderAboveSiblingsImpl(java.desktop@9-ea/CPlatformWindow.java:1153) at sun.lwawt.macosx.CPlatformWindow.orderAboveSiblings(java.desktop@9-ea/CPlatformWindow.java:1118) at sun.lwawt.macosx.CPlatformWindow.windowDidBecomeMain(java.desktop@9-ea/CPlatformWindow.java:1182) Thanks Reto