JOSM doesn't warn about many moved nodes

[GerdP]

What steps will reproduce the problem?

1. Download area with 20 or more buildings
2. Perform search for allindownloadedarea
3. Use mouse to move the selected objects
4. Use short cut like Shift+left to move the selected objects

What is the expected result?

Both step 3 and step 4 should trigger a warning about many moved objects

What happens instead?

Only step 3 produces the warning

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

The check is implemented in SelectAction.confirmOrUndoMovement(). It is only executed when the mouse is used to move objects.

Revision:19579
Is-Local-Build:true
Build-Date:2026-06-04 15:43:26

Identification: JOSM/1.5 (19579 SVN en) Windows 11 64-Bit
OS Build number: Windows 10 Pro 25H2 (26200)
Memory Usage: 380 MB / 4096 MB (154 MB allocated, but free)
Java version: 21.0.8+9-LTS, Eclipse Adoptium, OpenJDK 64-Bit Server VM
Look and Feel: com.sun.java.swing.plaf.windows.WindowsLookAndFeel
Screen: \Display0 1920x1080x32bpp@60Hz (scaling 1.00×1.00)
Maximum Screen Size: 1920×1080
Best cursor sizes: 16×16→32×32, 32×32→32×32
System property file.encoding: UTF-8
System property sun.jnu.encoding: Cp1252
Locale info: en_DE
Numbers with default locale: 1234567890 -> 1234567890
VM arguments: [-agentlib:jdwp=transport=dt_socket,suspend=y,address=localhost:59947, --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.prefs/java.util.prefs=ALL-UNNAMED, --add-opens=java.desktop/javax.swing.text.html=ALL-UNNAMED, -javaagent:D:\eclipse-java-2020-09\eclipse\configuration\org.eclipse.osgi\250\0\.cp\lib\javaagent-shaded.jar, -Dfile.encoding=UTF-8, -Dstdout.encoding=UTF-8, -Dstderr.encoding=UTF-8]
Program arguments: [--debug]
Dataset consistency test: No problems found

Plugins:
+ OpeningHoursEditor (36474)
+ apache-commons (36474)
+ buildings_tools (36474)
+ comfort0 (36474)
+ ejml (36474)
+ geotools (36474)
+ jackson (36474)
+ jaxb (36474)
+ jts (36474)
+ o5m (36474)
+ opendata (36474)
+ pbf (36474)
+ photo_geotagging (36474)
+ poly (36474)
+ reverter (36474)
+ terracer (36484)
+ undelete (36474)
+ utilsplugin2 (36497)

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

Map paint styles:
- c:\josm\core\resources\styles\standard\elemstyles.mapcss

Validator rules:
+ d:\java_tools\JOSM\mygeometry.mapcss
+ https://josm.openstreetmap.de/josmfile?page=Rules/GermanySpecific&zip=1
+ c:\josm\core\resources\data\validator\combinations.mapcss
+ c:\josm\core\resources\data\validator\geometry.mapcss

Last errors/warnings:
- 00029.115 W: java.io.IOException: Attribution is not loaded yet
- 00029.116 W: java.io.IOException: Attribution is not loaded yet
- 00029.117 W: java.io.IOException: Attribution is not loaded yet
- 00029.118 W: java.io.IOException: Attribution is not loaded yet
- 00029.119 W: java.io.IOException: Attribution is not loaded yet
- 00029.120 W: java.io.IOException: Attribution is not loaded yet
- 00029.121 W: java.io.IOException: Attribution is not loaded yet
- 00029.122 W: java.io.IOException: Attribution is not loaded yet
- 00029.123 W: java.io.IOException: Attribution is not loaded yet
- 00029.125 W: java.io.IOException: Attribution is not loaded yet

[GerdP]

We probably have some other short cut actions which have the potential to corrupt data, e.g. L (align nodes), which probably should perform more plausibility checks to avoid accidential changes.