Exception when loading the "Name suggestion index" tagging preset

[aceman]

What steps will reproduce the problem?

1. Just adding the "Name suggestion index" tagging preset. The exception happens.

The other presets worked fine until NSI is added.

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

Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2026-03-28 20:28:41 +0100 (Sat, 28 Mar 2026)
Revision:19555
Build-Date:2026-03-29 01:30:57
URL:https://josm.openstreetmap.de/svn/trunk

Identification: JOSM/1.5 (19555 sk) Linux Slackware Linux 15.0
Memory Usage: 1040 MB / 8008 MB (515 MB allocated, but free)
Java version: 25.0.1+8-27, Oracle Corporation, OpenJDK 64-Bit Server VM
Look and Feel: javax.swing.plaf.nimbus.NimbusLookAndFeel
Screen: :0.0 1920x1200x[Multi depth]@60Hz (scaling 1.00×1.00) :0.1 1280x1024x[Multi depth]@[Unknown refresh rate] (scaling 1.00×1.00)
Maximum Screen Size: 1920×1200
Best cursor sizes: 16×16→16×16, 32×32→32×32
Environment variable LANG: sk.UTF-8
Environment variable LC_ALL: sk_SK.utf8
System property file.encoding: UTF-8
System property sun.jnu.encoding: UTF-8
Locale info: sk_SK
Numbers with default locale: 1234567890 -> 1234567890
VM arguments: [--add-exports=java.base/sun.security.action=ALL-UNNAMED, --add-exports=java.desktop/com.sun.imageio.plugins.jpeg=ALL-UNNAMED, --add-exports=java.desktop/com.sun.imageio.spi=ALL-UNNAMED]

Plugins:
+ DirectDownload (36474)
+ Lanes (${version.entry.commit.revision})
+ Mapillary (1819)
+ OpeningHoursEditor (36474)
+ PolygonCutOut (v0.7.3)
+ apache-commons (36474)
+ apache-http (36474)
+ buildings_tools (36474)
+ ejml (36474)
+ geotools (36474)
+ graphview (36474)
+ imagery_offset_db (36474)
+ jackson (36474)
+ jaxb (36474)
+ jna (36474)
+ jogl (1.2.3)
+ jts (36474)
+ log4j (36474)
+ pt_assistant (682)
+ reverter (36474)
+ todo (158)
+ turnrestrictions (36474)
+ undelete (36474)
+ urbaneye3d (1.9.2)
+ utilsplugin2 (36474)
+ wikipedia (448)

Tagging presets:
+ https://josm.openstreetmap.de/josmfile?page=Presets/Crafts&zip=1
+ https://raw.githubusercontent.com/OpenNauticalChart/josm/master/Presets_Hafen.xml
+ https://josm.openstreetmap.de/josmfile?page=Presets/LaneAttributes&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/PublicTransportOneClick&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/Czech_Slovak_addresses&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/Xmas&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/Tagsforobservatories&zip=1
+ https://github.com/kendzi/Simple3dBuildingsPreset/releases/download/0.9_2018-05-08/s3db-preset.zip
+ https://cdn.jsdelivr.net/npm/name-suggestion-index@latest/dist/presets/nsi-josm-presets.min.xml

Map paint styles:
+ https://josm.openstreetmap.de/josmfile?page=Styles/Lane_and_Road_Attributes&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/OsmcSKCZPL&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/SlovakiaBicycleRoutes&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Surface&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/SimpleRoofTags&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/LessObtrusiveNodes&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Maxspeed&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/SidewalksAndFootways&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/HighwayAreas&zip=1

Validator rules:
+ https://josm.openstreetmap.de/josmfile?page=Rules/CzechRepublicAddressSystem&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Rules/SlovakiaSpecificRules&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Rules/AtmsSlovakia&zip=1

Last errors/warnings:
- 00043.218 W: [WAY] Maxspeed 10: Could not get presets icon 10.png
- 00043.218 W: [WAY] Maxspeed 20: Could not get presets icon 20.png
- 00043.218 W: [WAY] Maxspeed 130 dialnica: Could not get presets icon 130.png
- 00044.940 E: Zlyhala lokalizácia obrázku '10.png'
- 00044.940 E: Zlyhala lokalizácia obrázku '20.png'
- 00044.940 E: Zlyhala lokalizácia obrázku '130.png'
- 00044.940 W: [WAY] Maxspeed 10: Could not get presets icon 10.png
- 00044.940 W: [WAY] Maxspeed 20: Could not get presets icon 20.png
- 00044.941 W: [WAY] Maxspeed 130 dialnica: Could not get presets icon 130.png
- 00046.310 E: Handled by bug report queue: java.lang.IllegalArgumentException: Comparison method violates its general contract!



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

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-0 (42) of main
java.lang.IllegalArgumentException: Comparison method violates its general contract!
	at java.base/java.util.TimSort.mergeLo(TimSort.java:781)
	at java.base/java.util.TimSort.mergeAt(TimSort.java:518)
	at java.base/java.util.TimSort.mergeCollapse(TimSort.java:448)
	at java.base/java.util.TimSort.sort(TimSort.java:245)
	at java.base/java.util.Arrays.sort(Arrays.java:1304)
	at java.base/java.util.ArrayList.sortRange(ArrayList.java:1817)
	at java.base/java.util.ArrayList.sort(ArrayList.java:1810)
	at org.openstreetmap.josm.gui.tagging.presets.TaggingPresetMenu.handleMenuItem(TaggingPresetMenu.java:164)
	at org.openstreetmap.josm.gui.tagging.presets.TaggingPresetMenu.sortMenu(TaggingPresetMenu.java:151)
	at org.openstreetmap.josm.gui.tagging.presets.TaggingPresetMenu.sortMenu(TaggingPresetMenu.java:146)
	at org.openstreetmap.josm.gui.tagging.presets.TaggingPresetMenu.sortMenu(TaggingPresetMenu.java:146)
	at org.openstreetmap.josm.gui.tagging.presets.TaggingPresetMenu.sortMenu(TaggingPresetMenu.java:146)
	at org.openstreetmap.josm.gui.tagging.presets.TaggingPresetMenu.sortMenu(TaggingPresetMenu.java:146)
	at org.openstreetmap.josm.gui.tagging.presets.TaggingPresets.initialize(TaggingPresets.java:130)
	at org.openstreetmap.josm.gui.preferences.map.TaggingPresetPreference.ok(TaggingPresetPreference.java:264)
	at org.openstreetmap.josm.gui.preferences.PreferenceTabbedPane$PluginDownloadAfterTask.run(PreferenceTabbedPane.java:104)
	at org.openstreetmap.josm.gui.preferences.PreferenceTabbedPane.savePreferences(PreferenceTabbedPane.java:456)
	at org.openstreetmap.josm.gui.preferences.PreferenceDialog$OKAction.actionPerformed(PreferenceDialog.java:217)
	at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1972)
	at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2314)
	at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:407)
	at java.desktop/javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:262)
	at java.desktop/javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:279)
	at java.desktop/java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:299)
	at java.desktop/java.awt.Component.processMouseEvent(Component.java:6576)
	at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3404)
	at java.desktop/java.awt.Component.processEvent(Component.java:6341)
	at java.desktop/java.awt.Container.processEvent(Container.java:2260)
	at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:4958)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2318)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4790)
	at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4917)
	at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4560)
	at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4501)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2304)
	at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2671)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4790)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:725)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:702)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:117)
	at java.desktop/java.awt.WaitDispatchSupport$2.run(WaitDispatchSupport.java:187)
	at java.desktop/java.awt.WaitDispatchSupport.enter(WaitDispatchSupport.java:229)
	at java.desktop/java.awt.Dialog.show(Dialog.java:1051)
	at java.desktop/java.awt.Component.show(Component.java:1690)
	at java.desktop/java.awt.Component.setVisible(Component.java:1637)
	at java.desktop/java.awt.Window.setVisible(Window.java:982)
	at java.desktop/java.awt.Dialog.setVisible(Dialog.java:989)
	at org.openstreetmap.josm.gui.preferences.PreferenceDialog.setVisible(PreferenceDialog.java:145)
	at org.openstreetmap.josm.actions.PreferencesAction.run(PreferencesAction.java:119)
	at org.openstreetmap.josm.actions.PreferencesAction.actionPerformed(PreferencesAction.java:104)
	at java.desktop/javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1972)
	at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2314)
	at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:407)
	at java.desktop/javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:262)
	at java.desktop/javax.swing.AbstractButton.doClick(AbstractButton.java:374)
	at java.desktop/javax.swing.plaf.basic.BasicMenuItemUI.doClick(BasicMenuItemUI.java:987)
	at java.desktop/javax.swing.plaf.basic.BasicMenuItemUI$Handler.mouseReleased(BasicMenuItemUI.java:1031)
	at java.desktop/java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:299)
	at java.desktop/java.awt.Component.processMouseEvent(Component.java:6576)
	at java.desktop/javax.swing.JComponent.processMouseEvent(JComponent.java:3404)
	at java.desktop/java.awt.Component.processEvent(Component.java:6341)
	at java.desktop/java.awt.Container.processEvent(Container.java:2260)
	at java.desktop/java.awt.Component.dispatchEventImpl(Component.java:4958)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2318)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4790)
	at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4917)
	at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Container.java:4560)
	at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Container.java:4501)
	at java.desktop/java.awt.Container.dispatchEventImpl(Container.java:2304)
	at java.desktop/java.awt.Window.dispatchEventImpl(Window.java:2671)
	at java.desktop/java.awt.Component.dispatchEvent(Component.java:4790)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(EventQueue.java:725)
	at java.desktop/java.awt.EventQueue.dispatchEvent(EventQueue.java:702)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:203)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:124)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:113)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:109)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.desktop/java.awt.EventDispatchThread.run(EventDispatchThread.java:90)