Cache for background layer Esri World Imagery needs manual flush

[GerdP]

What steps will reproduce the problem?

1. Work for a while with Esri World Imagery background layer (and other layers)

What is the expected result?

Background images are loaded and rendered

What happens instead?

From time to time the download (or rendering) of ESRI images stops and a hourglass is rendered instead. I can wait for minutes, this will not change. When I use the "Flush tile cache" button everything is loaded within a few seconds.

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

Revision:19621
Is-Local-Build:true
Build-Date:2026-09-08 15:57:48

Identification: JOSM/1.5 (19621 SVN en) Windows 11 64-Bit
OS Build number: Windows 10 Pro 25H2 (26200)
Memory Usage: 4580 MB / 6144 MB (675 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 (36493)
+ apache-commons (36483)
+ buildings_tools (36503)
+ comfort0 (36483)
+ ejml (36483)
+ geotools (36483)
+ jackson (36502)
+ jaxb (36483)
+ jts (36483)
+ o5m (36493)
+ opendata (36503)
+ pbf (36493)
+ photo_geotagging (36503)
+ poly (36483)
+ reverter (36503)
+ terracer (36503)
+ undelete (36503)
+ utilsplugin2 (36503)

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:
- 159176.756 W: Not downloading all tiles because there are more than 40 tiles on an axis!
- 159176.793 W: Not downloading all tiles because there are more than 40 tiles on an axis!
- 159176.850 W: Not downloading all tiles because there are more than 40 tiles on an axis!
- 159176.887 W: Not downloading all tiles because there are more than 40 tiles on an axis!
- 159177.257 W: Not downloading all tiles because there are more than 40 tiles on an axis!
- 159177.851 W: Not downloading all tiles because there are more than 40 tiles on an axis!
- 159178.490 W: Not downloading all tiles because there are more than 40 tiles on an axis!
- 159179.049 W: Not downloading all tiles because there are more than 40 tiles on an axis!
- 159179.187 W: Not downloading all tiles because there are more than 40 tiles on an axis!
- 159354.690 W: java.net.SocketTimeoutException: Read timed out. Cause: java.net.SocketTimeoutException: Read timed out