Correct url is reported with invalid path

[GerdP]

What steps will reproduce the problem?

1. Run validator on ​https://www.openstreetmap.org/way/771715139 which has

url=​https://www.nabu-weyhe.de/projekte-und-themen/eulen-falken-und-deren-nistkästen/trafotürme

What is the expected result?

No warning, the link seems to work fine when I open it in JOSM

What happens instead?

URL validator - 'url': URL contains an invalid path: /projekte-und-themen/eulen-falken-und-deren-nistkästen/trafotürme (1)

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

I assume the German umlauts are the reason?

Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2023-08-29 13:38:40 +0200 (Tue, 29 Aug 2023)
Revision:18822
Build-Date:2023-08-30 01:30:57
URL:https://josm.openstreetmap.de/svn/trunk

Identification: JOSM/1.5 (18822 en) Windows 10 64-Bit
OS Build number: Windows 10 Home 2009 (19045)
Memory Usage: 1334 MB / 2016 MB (744 MB allocated, but free)
Java version: 17.0.5+8-LTS, Azul Systems, Inc., OpenJDK 64-Bit Server VM
Look and Feel: com.sun.java.swing.plaf.windows.WindowsLookAndFeel
Screen: \Display0 1920×1080 (scaling 1.50×1.50)
Maximum Screen Size: 1920×1080
Best cursor sizes: 16×16→48×48, 32×32→48×48
System property file.encoding: Cp1252
System property sun.jnu.encoding: Cp1252
Locale info: en_DE
Numbers with default locale: 1234567890 -> 1234567890
VM arguments: [-Djpackage.app-version=1.5.18622, --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\HWConsole.exe]
Dataset consistency test: No problems found

Plugins:
+ OpeningHoursEditor (36126)
+ buildings_tools (36134)
+ measurement (36126)
+ o5m (36126)
+ poly (36126)
+ reverter (36126)
+ undelete (36126)
+ utilsplugin2 (36134)

Tagging presets:
+ d:\josm\core\resources\data\defaultpresets.xml

Last errors/warnings:
- 00001.233 W: extended font config - overriding 'filename.Myanmar_Text=mmrtext.ttf' with 'MMRTEXT.TTF'
- 00001.237 W: extended font config - overriding 'filename.Mongolian_Baiti=monbaiti.ttf' with 'MONBAITI.TTF'
- 00003.467 E: java.security.KeyStoreException: Windows-ROOT not found. Cause: java.security.NoSuchAlgorithmException: Windows-ROOT KeyStore not available
- 01623.706 W: java.net.SocketTimeoutException: Read timed out. Cause: java.net.SocketTimeoutException: Read timed out