JOSM 19039 and 19096: Reproducible crashes

[MichaelFS]

What steps will reproduce the problem?

During start-up, JOSM claims
Missing JVM-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

After acceptance, JOSM is running and I can work but it crashes whenever I click Help > About or any time using a template or Template > Search.

Same behaviour, if I install the .tar.gz or run the .jar. The problem exists here since stable version 19039, same with stable 19096 and the actual nightly.

Crash.log added.

Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2024-06-07 13:51:44 +0200 (Fri, 07 Jun 2024)
Revision:19097
Build-Date:2024-06-08 01:31:16
URL:https://josm.openstreetmap.de/svn/trunk

Identification: JOSM/1.5 (19097 de) Linux Manjaro Linux
Memory Usage: 280 MB / 7832 MB (94 MB allocated, but free)
Java version: 22, N/A, OpenJDK 64-Bit Server VM
Look and Feel: javax.swing.plaf.nimbus.NimbusLookAndFeel
Screen: :0.0 1920×1080 (scaling 1.00×1.00)
Maximum Screen Size: 1920×1080
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
VM arguments: [--add-opens=java.desktop/javax.swing.text.html=ALL-UNNAMED, -Djosm.restart=true, -Dawt.useSystemAAFontSettings=gasp]

Plugins:
+ buildings_tools (36226)
+ continuosDownload (103)
+ fieldpapers (v0.5.0)
+ reverter (36256)
+ terracer (36205)
+ undelete (36226)
+ utilsplugin2 (36241)

Tagging presets:
+ https://josm.openstreetmap.de/josmfile?page=Presets/Playground_Equipment&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/Stolpersteine&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/WifiHotspots&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/public_bookcase&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/BuildingPreset&zip=1

Map paint styles:
+ https://josm.openstreetmap.de/josmfile?page=Styles/AddressValidator&zip=1