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[dx125]

What steps will reproduce the problem?

What is the expected result?

What happens instead?

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

Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2026-01-31 13:00:34 +0100 (Sat, 31 Jan 2026)
Revision:19481
Build-Date:2026-02-01 02:30:45
URL:https://josm.openstreetmap.de/svn/trunk

Identification: JOSM/1.5 (19481 de) Linux openSUSE Leap 16.0
Memory Usage: 128 MB / 4096 MB (95 MB allocated, but free)
Java version: 24.0.2+12-suse-1600-x8664, N/A, OpenJDK 64-Bit Server VM
Look and Feel: com.sun.java.swing.plaf.gtk.GTKLookAndFeel
Screen: :0.0 3840x2160x[Multi depth]@30Hz (scaling 2.00×2.00)
Maximum Screen Size: 3840×2160
Best cursor sizes: 16×16→16×16, 32×32→32×32
Environment variable LANG: de_DE.UTF-8
System property file.encoding: UTF-8
System property sun.jnu.encoding: UTF-8
Locale info: de_DE
Numbers with default locale: 1234567890 -> 1234567890
Desktop environment: KDE
Java package: java-24-openjdk:x86_64-24.0.2.0
VM arguments: [--add-modules=java.scripting,java.sql, --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:
+ buildings_tools
+ utilsplugin2

Last errors/warnings:
- 00000.468 E: java.lang.IllegalStateException: Fehler beim Hinzufügen des Zertifikats HARICA TLS RSA Root CA 2021 - Zertifikatsfingerabdruck stimmt nicht überein. 8dd4b5373cb0de36769c12339280d82746b3aa6cd426e797a31babe4279cf00b erwartet, aber war d95d0e8eda79525bf9beb11b14d2100d3294985f0c62d9fabd9cd999eccb7b1d
- 00000.588 E: Handled by bug report queue: java.lang.InternalError: Unable to load native GTK libraries



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

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: main (3)
java.lang.InternalError: Unable to load native GTK libraries
	at java.desktop/com.sun.java.swing.plaf.gtk.GTKLookAndFeel.initialize(GTKLookAndFeel.java:1433)
	at java.desktop/javax.swing.UIManager.setLookAndFeel(UIManager.java:583)
	at java.desktop/javax.swing.UIManager.setLookAndFeel(UIManager.java:630)
	at org.openstreetmap.josm.gui.MainApplication.setupUIManager(MainApplication.java:1139)
	at org.openstreetmap.josm.gui.MainApplication.mainJOSM(MainApplication.java:958)
	at org.openstreetmap.josm.gui.MainApplication$3.processArguments(MainApplication.java:280)
	at org.openstreetmap.josm.gui.MainApplication.main(MainApplication.java:766)

[stoecker]

I'd expect an installation issue of Java on your system. "Unable to load native GTK libraries" sounds very much like that.