From file /home/phablet/.cache/upstart/unity8.log:
em-settings"]::setInitialSurfaceSize(size=QSize(130, 130))
[2017-08-27:00:27:22.581] qtmir.applications: Application["ubuntu-system-settings"]::setInitialSurfaceSize(size=QSize(130, 1161))
[2017-08-27:00:27:22.582] qtmir.applications: Application["ubuntu-system-settings"]::setInitialSurfaceSize(size=QSize(1920, 1161))
[2017-08-27:00:27:22.596] unity.topsurfacelist: raiseId(id=18) - Model busy (modelState=1). Try again in the next event loop.
[2017-08-27:00:27:22.598] qtmir.surfaces: MirSurface[0x1a179b0,"unity8-dash"]::updateActiveFocus() unfocused
[2017-08-27:00:27:22.599] file:///usr/share/unity8//Stage/WindowDecoration.qml:92:26: Unable to assign [undefined] to int
[2017-08-27:00:27:22.601] unity.topsurfacelist: appendSurfaceHelper after (index=0,appId=unity8-dash,surface=0x1a179b0,id=1),(index=1,appId=logviewer.neothethird_logviewer,surface=0x10fbd78,id=17),(index=2,appId=ubuntu-system-settings,surface=0x0,id=18)
[2017-08-27:00:27:22.602] qtmir.applications: ApplicationManager::add(appId="ubuntu-system-settings") - after "unity8-dash,logviewer.neothethird_logviewer,ubuntu-system-settings"
[2017-08-27:00:27:22.602] qtmir.applications: Application["ubuntu-system-settings"]::requestFocus() - emitting focusRequested()
[2017-08-27:00:27:22.604] unity.topsurfacelist: raiseId(id=18) - do it now.
[2017-08-27:00:27:22.604] unity.topsurfacelist: move from=2 to=0
[2017-08-27:00:27:22.608] qtmir.surfaces: MirSurface[0x1a179b0,"unity8-dash"]::updateVisibility(false)
[2017-08-27:00:27:22.609] qtmir.surfaces: MirSurface[0x1a179b0,"unity8-dash"]::onAttributeChanged visible = false
[2017-08-27:00:27:22.620] qtmir.applications: Application["unity8-dash"]::setRequestedState(requestedState=suspended)
[2017-08-27:00:27:22.620] unity.topsurfacelist: move after (index=0,appId=ubuntu-system-settings,surface=0x0,id=18),(index=1,appId=unity8-dash,surface=0x1a179b0,id=1),(index=2,appId=logviewer.neothethird_logviewer,surface=0x10fbd78,id=17)
[2017-08-27:00:27:22.621] qtmir.sessions: Wakelock acquired "201"
[2017-08-27:00:27:23.091] qtmir.applications: ApplicationManager::onProcessFailed - appId= "ubuntu-system-settings"
[2017-08-27:00:27:23.092] qtmir.applications: Application["ubuntu-system-settings"]::setInternalState(state=Stopped)
[2017-08-27:00:27:23.092] qtmir.applications: ApplicationManager::remove(appId="ubuntu-system-settings") - before "unity8-dash,logviewer.neothethird_logviewer,ubuntu-system-settings"
[2017-08-27:00:27:23.093] unity.topsurfacelist: removeApplication(ubuntu-system-settings)
[2017-08-27:00:27:23.102] unity.topsurfacelist: raiseId(id=1) - Model busy (modelState=2). Try again in the next event loop.
[2017-08-27:00:27:23.103] qtmir.applications: Application["unity8-dash"]::setRequestedState(requestedState=running)
[2017-08-27:00:27:23.105] qtmir.surfaces: MirSurface[0x1a179b0,"unity8-dash"]::updateActiveFocus() focused
[2017-08-27:00:27:23.109] qtmir.surfaces: MirSurface[0x1a179b0,"unity8-dash"]::updateVisibility(true)
[2017-08-27:00:27:23.109] qtmir.surfaces: MirSurface[0x1a179b0,"unity8-dash"]::onAttributeChanged visible = true
[2017-08-27:00:27:23.110] qtmir.applications: Application["ubuntu-system-settings"]::setRequestedState(requestedState=suspended)
[2017-08-27:00:27:23.111] unity.topsurfacelist: removeApplication after (index=0,appId=unity8-dash,surface=0x1a179b0,id=1),(index=1,appId=logviewer.neothethird_logviewer,surface=0x10fbd78,id=17)
[2017-08-27:00:27:23.111] qtmir.applications: ApplicationManager::remove(appId="ubuntu-system-settings") - after "unity8-dash,logviewer.neothethird_logviewer"
[2017-08-27:00:27:23.111] qtmir.sessions: Wakelock released "201"
[2017-08-27:00:27:23.111] unity.topsurfacelist: raiseId(id=1) - do it now.
[2017-08-27:00:27:23.120] qtmir.applications: ApplicationManager::onProcessStopped - appId= "ubuntu-system-settings"
[2017-08-27:00:27:23.121] ApplicationManager::onProcessStopped reports stop of appId= "ubuntu-system-settings" which AppMan is not managing, ignoring the event
[2017-08-27:00:27:23.299] file:///usr/lib/arm-linux-gnueabihf/qt5/qml/Ubuntu/Components/ListItems/1.3/ThinDivider.qml:50: TypeError: Cannot read property of null
[2017-08-27:00:27:23.299] file:///usr/lib/arm-linux-gnueabihf/qt5/qml/Ubuntu/Components/ListItems/1.3/ThinDivider.qml:51: TypeError: Cannot read property of null
[2017-08-27:00:27:23.896] qtmir.surfaces: MirSurface[0x1a179b0,"unity8-dash"]::updateActiveFocus() unfocused
[2017-08-27:00:27:23.901] file:///usr/share/unity8//Stage/Stage.qml:470: TypeError: Cannot read property 'x' of null
[2017-08-27:00:27:23.903] file:///usr/share/unity8//Stage/Stage.qml:470: TypeError: Cannot read property 'x' of null
[2017-08-27:00:27:23.905] qtmir.surfaces: MirSurface[0x10fbd78,"logviewer.neothethird_logviewer"]::updateVisibility(true)
[2017-08-27:00:27:23.905] qtmir.surfaces: MirSurface[0x10fbd78,"logviewer.neothethird_logviewer"]::onAttributeChanged visible = true
[2017-08-27:00:27:23.958] [PERFORMANCE]: Last frame took 48 ms to render.
[2017-08-27:00:27:24.399] file:///usr/share/unity8//Stage/WindowDecoration.qml:92:26: Unable to assign [undefined] to int
[2017-08-27:00:27:25.171] qtmir.surfaces: MirSurface[0x10fbd78,"logviewer.neothethird_logviewer"]::updateVisibility(false)
[2017-08-27:00:27:25.171] qtmir.surfaces: MirSurface[0x10fbd78,"logviewer.neothethird_logviewer"]::onAttributeChanged visible = false
[2017-08-27:00:27:25.173] unity.topsurfacelist: raiseId(id=17) - do it now.
[2017-08-27:00:27:25.174] unity.topsurfacelist: move from=1 to=0
[2017-08-27:00:27:25.176] qtmir.surfaces: MirSurface[0x1a179b0,"unity8-dash"]::updateVisibility(false)
[2017-08-27:00:27:25.176] qtmir.surfaces: MirSurface[0x1a179b0,"unity8-dash"]::onAttributeChanged visible = false
[2017-08-27:00:27:25.177] qtmir.surfaces: MirSurface[0x10fbd78,"logviewer.neothethird_logviewer"]::updateVisibility(true)
[2017-08-27:00:27:25.177] qtmir.surfaces: MirSurface[0x10fbd78,"logviewer.neothethird_logviewer"]::onAttributeChanged visible = true
[2017-08-27:00:27:25.178] qtmir.applications: Application["logviewer.neothethird_logviewer"]::setRequestedState(requestedState=running)
[2017-08-27:00:27:25.178] qtmir.applications: Application["logviewer.neothethird_logviewer"]::resume()
[2017-08-27:00:27:25.182] qtmir.applications: Application["logviewer.neothethird_logviewer"]::setInternalState(state=Running)
[2017-08-27:00:27:25.183] qtmir.surfaces: Session[0x1d1a368,name="Main.qml"]::resume state=suspended
[2017-08-27:00:27:25.183] qtmir.surfaces: MirSurface[0x10fbd78,"logviewer.neothethird_logviewer"]::startFrameDropper()
[2017-08-27:00:27:25.183] qtmir.surfaces: Session[0x1d1a368,name="Main.qml"]::setState(state=running)
[2017-08-27:00:27:25.183] unity.topsurfacelist: move after (index=0,appId=logviewer.neothethird_logviewer,surface=0x10fbd78,id=17),(index=1,appId=unity8-dash,surface=0x1a179b0,id=1)
[2017-08-27:00:27:25.196] qtmir.sessions: Wakelock acquired "202"
[2017-08-27:00:27:25.303] unity.topsurfacelist: raiseId(id=17) - do it now.
[2017-08-27:00:27:25.303] qtmir.surfaces: MirFocusController::setFocusedSurface(qtmir::MirSurface(0x10fbd78) )
[2017-08-27:00:27:25.304] qtmir.surfaces: MirSurface[0x10fbd78,"logviewer.neothethird_logviewer"]::raise()
[2017-08-27:00:27:25.305] qtmir.applications: Application["unity8-dash"]::setRequestedState(requestedState=suspended)
[2017-08-27:00:27:25.306] qtmir.surfaces: MirSurface[0x10fbd78,"logviewer.neothethird_logviewer"]::updateActiveFocus() focused
[2017-08-27:00:27:25.306] qtmir.applications: ApplicationManager::updateFocusedApplication() focused "logviewer.neothethird_logviewer"
[2017-08-27:00:27:25.307] qtmir.applications: ApplicationManager::move - from= 1 to= 0
[2017-08-27:00:27:25.307] qtmir.applications: ApplicationManager::move after "logviewer.neothethird_logviewer,unity8-dash"
[2017-08-27:00:27:25.307] qtmir.applications: ApplicationManager::updateFocusedApplication() unfocused "unity8-dash"