Tried to change highway value

[anonymous]

What steps will reproduce the problem?

1. Happened only once

What is the expected result?

Value changes to input provided

What happens instead?

Exception thrown

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

Revision:19555
Build-Date:2026-03-30 09:42:59

Identification: JOSM/1.5 (19555 en) Windows 11 64-Bit
OS Build number: Windows 10 Home 25H2 (26200)
Memory Usage: 432 MB / 12080 MB (113 MB allocated, but free)
Java version: 21.0.10+7-LTS, Azul Systems, Inc., OpenJDK 64-Bit Server VM
Look and Feel: com.sun.java.swing.plaf.windows.WindowsLookAndFeel
Screen: \Display0 2560x1600x32bpp@165Hz (scaling 1.50×1.50)
Maximum Screen Size: 2560×1600
Best cursor sizes: 16×16→48×48, 32×32→48×48
System property file.encoding: UTF-8
System property sun.jnu.encoding: Cp1252
Locale info: en_IE
Numbers with default locale: 1234567890 -> 1234567890
VM arguments: [-Djpackage.app-version=1.5.19555, -XX:MaxRAMPercentage=75.0, --add-modules=java.scripting,java.sql,javafx.controls,javafx.media,javafx.swing,javafx.web, --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, --add-opens=java.base/java.lang=ALL-UNNAMED, --add-opens=java.base/java.nio=ALL-UNNAMED, --add-opens=java.base/jdk.internal.loader=ALL-UNNAMED, --add-opens=java.base/jdk.internal.ref=ALL-UNNAMED, --add-opens=java.desktop/javax.imageio.spi=ALL-UNNAMED, --add-opens=java.desktop/javax.swing.text.html=ALL-UNNAMED, --add-opens=java.prefs/java.util.prefs=ALL-UNNAMED, -Djpackage.app-path=%UserProfile%\AppData\Local\JOSM\JOSM.exe]
Dataset consistency test: No problems found

Last errors/warnings:
- 00000.312 W: extended font config - overriding 'filename.Malgun_Gothic=malgun.ttf' with 'MALGUN.TTF'
- 00000.315 W: extended font config - overriding 'filename.Myanmar_Text=mmrtext.ttf' with 'MMRTEXT.TTF'
- 00000.316 W: extended font config - overriding 'filename.Mongolian_Baiti=monbaiti.ttf' with 'MONBAITI.TTF'
- 00001.686 E: java.security.KeyStoreException: Windows-ROOT not found. Cause: java.security.NoSuchAlgorithmException: Windows-ROOT KeyStore not available
- 00172.641 E: Handled by bug report queue: org.openstreetmap.josm.data.osm.DataIntegrityProblemException: Primitive cannot be modified in read-only dataset: {Way id=-921 version=0 MVT nodes=[{Node id=10835677291 version=1 MV lat=52.83285401901,lon=-8.46746300675}, {Node id=10835677292 version=1 V lat=52.8329022,lon=-8.4675005}, {Node id=10835677293 version=1 V lat=52.8329622,lon=-8.4675327}, {Node id=10835677294 version=1 V lat=52.8330189,lon=-8.4675783}, {Node id=10835677295 version=1 MV lat=52.83308692256,lon=-8.46764271105}]}



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

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-0 (52) of main
org.openstreetmap.josm.data.osm.DataIntegrityProblemException: Primitive cannot be modified in read-only dataset: {Way id=-921 version=0 MVT nodes=[{Node id=10835677291 version=1 MV lat=52.83285401901,lon=-8.46746300675}, {Node id=10835677292 version=1 V lat=52.8329022,lon=-8.4675005}, {Node id=10835677293 version=1 V lat=52.8329622,lon=-8.4675327}, {Node id=10835677294 version=1 V lat=52.8330189,lon=-8.4675783}, {Node id=10835677295 version=1 MV lat=52.83308692256,lon=-8.46764271105}]}
	at org.openstreetmap.josm.data.osm.OsmPrimitive.checkDatasetNotReadOnly(OsmPrimitive.java:212)
	at org.openstreetmap.josm.data.osm.OsmPrimitive.put(OsmPrimitive.java:546)
	at org.openstreetmap.josm.command.ChangePropertyCommand.executeCommand(ChangePropertyCommand.java:180)
	at org.openstreetmap.josm.data.UndoRedoHandler.addNoRedraw(UndoRedoHandler.java:300)
	at org.openstreetmap.josm.data.UndoRedoHandler.add(UndoRedoHandler.java:354)
	at org.openstreetmap.josm.gui.dialogs.properties.TagEditHelper$EditTagDialog.performTagEdit(TagEditHelper.java:635)
	at org.openstreetmap.josm.gui.dialogs.properties.TagEditHelper.editTag(TagEditHelper.java:335)
	at org.openstreetmap.josm.gui.dialogs.properties.PropertiesDialog$MouseClickWatch.mouseClicked(PropertiesDialog.java:1133)
	at java.desktop/java.awt.AWTEventMulticaster.mouseClicked(Unknown Source)
	at java.desktop/java.awt.Component.processMouseEvent(Unknown Source)
	at java.desktop/javax.swing.JComponent.processMouseEvent(Unknown Source)
	at java.desktop/java.awt.Component.processEvent(Unknown Source)
	at java.desktop/java.awt.Container.processEvent(Unknown Source)
	at java.desktop/java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.desktop/java.awt.Component.dispatchEvent(Unknown Source)
	at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.desktop/java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.desktop/java.awt.Component.dispatchEvent(Unknown Source)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source)
	at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
	at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
	at java.base/java.security.AccessController.doPrivileged(Unknown Source)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.desktop/java.awt.EventQueue$5.run(Unknown Source)
	at java.desktop/java.awt.EventQueue$5.run(Unknown Source)
	at java.base/java.security.AccessController.doPrivileged(Unknown Source)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.run(Unknown Source)