id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
17064	Error closing data layer when activating JOSM and closing the data layer at the same time	majkaz	team	"==== What steps will reproduce the problem?
1. switch to different program, part of JOSM stays visible on screen
2. switch back to JOSM by directly clicking data layer  > close

==== What is the expected result?
1. JOSM gets activated
2. data layer is closed

Equally valid IMHO:

1. JOSM gets activated
2. nothing else happens

==== What happens instead?
Data layer is closed, but ""Unexpected error"" comes up.

==== Please provide any additional information below. Attach a screenshot if possible.

{{{
URL:https://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2018-12-03 01:53:41 +0100 (Mon, 03 Dec 2018)
Build-Date:2018-12-03 02:33:34
Revision:14500
Relative:URL: ^/trunk

Identification: JOSM/1.5 (14500 cs) Windows 10 64-Bit
OS Build number: Windows 10 Enterprise 1607 (14393)
Memory Usage: 248 MB / 989 MB (118 MB allocated, but free)
Java version: 1.8.0_121-b13, Oracle Corporation, Java HotSpot(TM) Client VM
Screen: \Display0 1920x1080
Maximum Screen Size: 1920x1080
VM arguments: [-Dhttp.proxyHost=xxxx, -Dhttp.proxyPort=8080, -Djosm.home=./, -Djosm.pref=./_IMPORT, -Djosm.userdata=./_IMPORT]

Plugins:
+ todo (30306)
+ utilsplugin2 (34506)

Last errors/warnings:
- E: java.util.concurrent.ExecutionException: [powershell, -Command, [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12;[System.Net.WebRequest]::Create('https://grca.nat.gov.tw').GetResponse()]
- W: No configuration settings found.  Using hardcoded default values for all pools.
- E: java.awt.datatransfer.UnsupportedFlavorException: Layer
- E: Handled by bug report queue: java.lang.NullPointerException


=== REPORTED CRASH DATA ===
BugReportExceptionHandler#handleException:
No data collected.

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-0 (15) of main
java.lang.NullPointerException
	at org.openstreetmap.josm.gui.tagging.ac.AutoCompletionManager$1.layerRemoving(AutoCompletionManager.java:487)
	at org.openstreetmap.josm.gui.layer.LayerManager.fireLayerRemoving(LayerManager.java:475)
	at org.openstreetmap.josm.gui.layer.LayerManager.realRemoveSingleLayer(LayerManager.java:277)
	at org.openstreetmap.josm.gui.layer.MainLayerManager.realRemoveSingleLayer(MainLayerManager.java:305)
	at org.openstreetmap.josm.gui.layer.LayerManager.realRemoveLayer(LayerManager.java:265)
	at org.openstreetmap.josm.gui.layer.LayerManager.lambda$removeLayer$1(LayerManager.java:247)
	at org.openstreetmap.josm.gui.util.GuiHelper.runInEDTAndWaitWithException(GuiHelper.java:238)
	at org.openstreetmap.josm.gui.layer.LayerManager.removeLayer(LayerManager.java:247)
	at org.openstreetmap.josm.gui.dialogs.layer.DeleteLayerAction.actionPerformed(DeleteLayerAction.java:52)
	at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
	at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
	at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
	at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
	at java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
	at java.awt.Component.processMouseEvent(Unknown Source)
	at javax.swing.JComponent.processMouseEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
	at java.awt.EventQueue.access$500(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue$4.run(Unknown Source)
	at java.awt.EventQueue$4.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)
}}}
"	defect	closed	normal	18.12	Core		fixed	template_report regression