Unpredictable result when rotating an object again

[GerdP]

What steps will reproduce the problem?

1. Select a shape, eg a building
2. Rotate it a bit
3. Rotate it a bit again

What is the expected result?

Shape is close to the result of the first rotate action, just a bit rotated

What happens instead?

Shape is rotated to a completely unexpected position.

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

An old bug. This is just annoying. One has to undo the first rotation and do it again. This doesn't happen with move or scale mode, only with rotation. JOSM should combine both rotations to one similar to the result of scaling or moving.

Revision:19556
Is-Local-Build:true
Build-Date:2026-04-06 16:55:24

Identification: JOSM/1.5 (19556 SVN en) Windows 11 64-Bit
OS Build number: Windows 10 Pro 25H2 (26200)
Memory Usage: 2716 MB / 6144 MB (857 MB allocated, but free)
Java version: 21.0.2+13-LTS, Azul Systems, Inc., 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: [-Djpackage.app-version=1.5.19039, --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 HWConsole.exe]
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:
- 04372.085 W: java.io.IOException: Attribution is not loaded yet
- 04372.085 W: java.io.IOException: Attribution is not loaded yet
- 04372.085 W: java.io.IOException: Attribution is not loaded yet
- 04372.086 W: java.io.IOException: Attribution is not loaded yet
- 04372.086 W: java.io.IOException: Attribution is not loaded yet
- 04372.087 W: java.io.IOException: Attribution is not loaded yet
- 04372.087 W: java.io.IOException: Attribution is not loaded yet
- 04372.088 W: java.io.IOException: Attribution is not loaded yet
- 04372.089 W: java.io.IOException: Attribution is not loaded yet
- 04372.089 W: java.io.IOException: Attribution is not loaded yet