Mac OS, iOS: QML crashes on state change after update from 5.2.0 to 5.2.1/5.2.2

Application sometimes crashes on state change (triggered by 'when') after update from 5.2.0 to newer versions. Unfortunatelly it's difficult to reproduce with some simple part of code, simple examples work fine, only my huge application crashes. When I disable state changes, everything else works fine.

Backtrace from xcode:

• thread #1: tid = 0x394fe, 0x38f5a1fc libsystem_kernel.dylib`__pthread_kill + 8, queue = 'com.apple.main-thread, stop reason = signal SIGABRT
  frame #0: 0x38f5a1fc libsystem_kernel.dylib`__pthread_kill + 8
  frame #1: 0x38fc1a52 libsystem_pthread.dylib`pthread_kill + 58
  frame #2: 0x38f0b02c libsystem_c.dylib`abort + 76
  frame #3: 0x008d4d94 Application`qt_message_fatal(=QtFatalMsg, context=0x27cf4c90, message=0x27cf4bd0) + 16 at qlogging.cpp:1012
  frame #4: 0x008d536c Application`QMessageLogger::fatal(this=0x27cf4c90, msg=0x00ced523) const + 180 at qlogging.cpp:384
  frame #5: 0x008d0d86 Application`qt_assert_x(where=0x00ced63a, what=0x00ced5f2, file=0x00ca787f, line=372) + 106 at qglobal.cpp:2104
  frame #6: 0x004095aa Application`QVector<QV4::Function*>::operator[](this=0x16009b74, i=18) + 74 at qvector.h:372
  frame #7: 0x004b64ba Application`QQmlBinding::createBinding(id=1, obj=0x14e23d70, ctxt=0x14df4380, url=0x27cf4ef8, lineNumber=13) + 374 at qqmlbinding.cpp:94
  frame #8: 0x00121eec Application`QQuickPropertyChanges::actions(this=0x2448c090) + 676 at qquickpropertychanges.cpp:487
  frame #9: 0x0011c44a Application`QQuickStatePrivate::generateActionList(this=0x14e23740) const + 386 at qquickstate.cpp:340
  frame #10: 0x0011cafa Application`QQuickState::apply(this=0x14e237b0, trans=0x00000000, revert=0x14e239b0) + 122 at qquickstate.cpp:579
  frame #11: 0x00125046 Application`QQuickStateGroupPrivate::setCurrentStateInternal(this=0x14e23a70, state=0x27cf5514, ignoreTrans=false) + 834 at qquickstategroup.cpp:487
  frame #12: 0x001251c6 Application`QQuickStateGroup::setState(this=0x14e23ad0, state=0x27cf5514) + 62 at qquickstategroup.cpp:293
  frame #13: 0x001254be Application`QQuickStateGroupPrivate::updateAutoState(this=0x14e23a70) + 426 at qquickstategroup.cpp:347
  frame #14: 0x001255be Application`QQuickStateGroup::updateAutoState(this=0x14e23ad0) + 22 at qquickstategroup.cpp:328
  frame #15: 0x0011c126 Application`QQuickState::setWhen(this=0x14e239b0, when=0x14e23860) + 46 at qquickstate.cpp:236
  frame #16: 0x002bb6ac Application`QQuickState::qt_metacall(this=0x14e239b0, _c=WriteProperty, _id=1, _a=0x27cf5724) + 340 at moc_qquickstate_p.cpp:224
  frame #17: 0x00a3d07e Application`QMetaObject::metacall(object=0x14e239b0, cl=WriteProperty, idx=2, argv=0x27cf5724) + 110 at qmetaobject.cpp:308
  frame #18: 0x004b6f82 Application`QQmlBinding::update(this=0x14e23860, flags=QQmlPropertyPrivate::WriteFlags at 0x27cf575c) + 418 at qqmlbinding.cpp:241
  frame #19: 0x004e4142 Application`QQmlBinding::update(this=0x14e23860) + 34 at qqmlbinding_p.h:106
  frame #20: 0x004b745a Application`QQmlBinding::expressionChanged(e=0x14e23870) + 58 at qqmlbinding.cpp:311
  frame #21: 0x004afd6a Application`QQmlJavaScriptExpressionGuard_callback(e=0x04cc19f0, =0x00000000) + 34 at qqmljavascriptexpression.cpp:372
  frame #22: 0x0049881e Application`QQmlNotifier::emitNotify(endpoint=0x04cc19f0, a=0x00000000) + 202 at qqmlnotifier.cpp:81
  frame #23: 0x0040c724 Application`QQmlData::signalEmitted(=0x14e23430, object=0x14e23420, index=30, a=0x00000000) + 740 at qqmlengine.cpp:713
  frame #24: 0x00a7567c Application`QMetaObject::activate(sender=0x14e23420, signalOffset=29, local_signal_index=1, argv=0x00000000) + 336 at qobject.cpp:3466
  frame #25: 0x00a75526 Application`QMetaObject::activate(sender=0x14e23420, m=0x00d07490, local_signal_index=1, argv=0x00000000) + 42 at qobject.cpp:3446
  frame #26: 0x002d5868 Application`QQuickMouseArea::pressedChanged(this=0x14e23420) + 36 at moc_qquickmousearea_p.cpp:437
  frame #27: 0x002313c8 Application`QQuickMouseArea::setPressed(this=0x14e23420, button=LeftButton, p=true) + 468 at qquickmousearea.cpp:1102
  frame #28: 0x00231168 Application`QQuickMouseArea::mousePressEvent(this=0x14e23420, event=0x14e1c770) + 288 at qquickmousearea.cpp:632
  frame #29: 0x001a701a Application`QQuickItemPrivate::deliverMouseEvent(this=0x14e232e0, e=0x14e1c770) + 158 at qquickitem.cpp:4507
  frame #30: 0x001b6dd8 Application`QQuickWindowPrivate::translateTouchToMouse(this=0x14eba6f0, item=0x14e23420, event=0x27cf70fc) + 332 at qquickwindow.cpp:528
  frame #31: 0x001ba7b6 Application`QQuickWindowPrivate::deliverMatchingPointsToItem(this=0x14eba6f0, item=0x14e23420, event=0x27cf70fc, acceptedNewPoints=0x27cf6ab4, matchingNewPoints=0x27cf60d4, matchingPoints=0x27cf60d0) + 522 at qquickwindow.cpp:1825
  frame #32: 0x001ba53e Application`QQuickWindowPrivate::deliverTouchPoints(this=0x14eba6f0, item=0x14e23420, event=0x27cf70fc, newPoints=0x27cf6acc, acceptedNewPoints=0x27cf6ab4, updatedPoints=0x27cf6ad4) + 830 at qquickwindow.cpp:1783
  frame #33: 0x001ba318 Application`QQuickWindowPrivate::deliverTouchPoints(this=0x14eba6f0, item=0x14e23d70, event=0x27cf70fc, newPoints=0x27cf6acc, acceptedNewPoints=0x27cf6ab4, updatedPoints=0x27cf6ad4) + 280 at qquickwindow.cpp:1733
  frame #34: 0x001ba318 Application`QQuickWindowPrivate::deliverTouchPoints(this=0x14eba6f0, item=0x14e292d0, event=0x27cf70fc, newPoints=0x27cf6acc, acceptedNewPoints=0x27cf6ab4, updatedPoints=0x27cf6ad4) + 280 at qquickwindow.cpp:1733
  frame #35: 0x001ba318 Application`QQuickWindowPrivate::deliverTouchPoints(this=0x14eba6f0, item=0x14d59c90, event=0x27cf70fc, newPoints=0x27cf6acc, acceptedNewPoints=0x27cf6ab4, updatedPoints=0x27cf6ad4) + 280 at qquickwindow.cpp:1733
  frame #36: 0x001ba318 Application`QQuickWindowPrivate::deliverTouchPoints(this=0x14eba6f0, item=0x14d597e0, event=0x27cf70fc, newPoints=0x27cf6acc, acceptedNewPoints=0x27cf6ab4, updatedPoints=0x27cf6ad4) + 280 at qquickwindow.cpp:1733
  frame #37: 0x001ba318 Application`QQuickWindowPrivate::deliverTouchPoints(this=0x14eba6f0, item=0x14d59690, event=0x27cf70fc, newPoints=0x27cf6acc, acceptedNewPoints=0x27cf6ab4, updatedPoints=0x27cf6ad4) + 280 at qquickwindow.cpp:1733
  frame #38: 0x001ba318 Application`QQuickWindowPrivate::deliverTouchPoints(this=0x14eba6f0, item=0x14d7c420, event=0x27cf70fc, newPoints=0x27cf6acc, acceptedNewPoints=0x27cf6ab4, updatedPoints=0x27cf6ad4) + 280 at qquickwindow.cpp:1733
  frame #39: 0x001b8f98 Application`QQuickWindowPrivate::deliverTouchEvent(this=0x14eba6f0, event=0x27cf70fc) + 280 at qquickwindow.cpp:1691
  frame #40: 0x001b8d4e Application`QQuickWindow::event(this=0x27d79e84, e=0x27cf70fc) + 146 at qquickwindow.cpp:1248
  frame #41: 0x00a3609e Application`QCoreApplicationPrivate::notify_helper(this=0x14eb22b0, receiver=0x27d79e84, event=0x27cf70fc) + 94 at qcoreapplication.cpp:998
  frame #42: 0x00a36026 Application`QCoreApplication::notify(this=0x27d79e98, receiver=0x27d79e84, event=0x27cf70fc) + 178 at qcoreapplication.cpp:943
  frame #43: 0x0069321e Application`QGuiApplication::notify(this=0x27d79e98, object=0x27d79e84, event=0x27cf70fc) + 158 at qguiapplication.cpp:1354
  frame #44: 0x00a35eba Application`QCoreApplication::notifyInternal(this=0x27d79e98, receiver=0x27d79e84, event=0x27cf70fc) + 250 at qcoreapplication.cpp:881
  frame #45: 0x00698a0e Application`QCoreApplication::sendSpontaneousEvent(receiver=0x27d79e84, event=0x27cf70fc) + 86 at qcoreapplication.h:235
  frame #46: 0x00694e46 Application`QGuiApplicationPrivate::processTouchEvent(e=0x16113b10) + 3614 at qguiapplication.cpp:2212
  frame #47: 0x00693432 Application`QGuiApplicationPrivate::processWindowSystemEvent(e=0x16113b10) + 182 at qguiapplication.cpp:1408
  frame #48: 0x00689682 Application`QWindowSystemInterface::sendWindowSystemEvents(flags=QEventLoop::ProcessEventsFlags at 0x27cf73e8) + 94 at qwindowsysteminterface.cpp:575
  frame #49: 0x00688ef8 Application`QWindowSystemInterface::flushWindowSystemEvents() + 296 at qwindowsysteminterface.cpp:559
  frame #50: 0x000b96b0 Application`-[QUIView sendTouchEventWithTimestamp:](self=0x1614f3f0, _cmd=0x00cf91b7, timeStamp=84594756) + 240 at qioswindow.mm:248
  frame #51: 0x000b997a Application`-[QUIView touchesBegan:withEvent:](self=0x1614f3f0, _cmd=0x30f6edda, touches=0x161152a0, event=0x14e7e330) + 602 at qioswindow.mm:263
  frame #52: 0x309ae354 UIKit`-[UIWindow _sendTouchesForEvent:] + 320
  frame #53: 0x309a9450 UIKit`-[UIWindow sendEvent:] + 832
  frame #54: 0x3097ed78 UIKit`-[UIApplication sendEvent:] + 196
  frame #55: 0x3097d568 UIKit`_UIApplicationHandleEventQueue + 7116
  frame #56: 0x2e1c0f1e CoreFoundation`_CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION_ + 14
  frame #57: 0x2e1c03e6 CoreFoundation`__CFRunLoopDoSources0 + 206
  frame #58: 0x2e1bebd6 CoreFoundation`__CFRunLoopRun + 630
  frame #59: 0x2e129470 CoreFoundation`CFRunLoopRunSpecific + 524
  frame #60: 0x2e129252 CoreFoundation`CFRunLoopRunInMode + 106
  frame #61: 0x32e3d2ea GraphicsServices`GSEventRunModal + 138
  frame #62: 0x309de844 UIKit`UIApplicationMain + 1136
  frame #63: 0x000b7a94 Application`main(argc=1, argv=0x27d7acfc) + 504 at qioseventdispatcher.mm:232
  frame #64: 0x00093228 Application`start + 40