Mouse input issues

[anonymous]

What steps will reproduce the problem?

1. Open JOSM

What is the expected result?

Mouse clicking on UI element works.

What happens instead?

Mouse clicks on UI elements does not work.

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

This issue is not always present; sometimes when opening JOSM it happens that left-clicks on UI elements (buttons, menus) are not registered. Seems to be similar to (or related to) issues #16401 and #13173.

Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2019-09-29 23:59:43 +0200 (Sun, 29 Sep 2019)
Revision:15390
Build-Date:2019-09-29 22:01:37
URL:https://josm.openstreetmap.de/svn/trunk

Identification: JOSM/1.5 (15390 en) Linux Ubuntu 18.04.3 LTS
Memory Usage: 358 MB / 2048 MB (140 MB allocated, but free)
Java version: 11.0.4+11-post-Ubuntu-1ubuntu218.04.3, Ubuntu, OpenJDK 64-Bit Server VM
Screen: :0.0 3840x2160
Maximum Screen Size: 3840x2160
Java package: openjdk-11-jre:amd64-11.0.4+11-1ubuntu2~18.04.3
WebStart package: icedtea-netx:amd64-1.8-0ubuntu8~18.04
Java ATK Wrapper package: libatk-wrapper-java:all-0.33.3-20ubuntu0.1
libcommons-compress-java: libcommons-compress-java:all-1.18-1~18.04
libcommons-logging-java: libcommons-logging-java:all-1.2-2
fonts-noto: fonts-noto:all-20171026-2
liboauth-signpost-java: liboauth-signpost-java:all-1.2.1.2-1.5
VM arguments: [--add-reads=java.base=ALL-UNNAMED,java.desktop, --add-reads=java.desktop=ALL-UNNAMED,java.naming, --add-reads=java.naming=ALL-UNNAMED,java.desktop, --add-exports=java.desktop/sun.awt=ALL-UNNAMED,java.desktop, --add-exports=java.desktop/javax.jnlp=ALL-UNNAMED,java.desktop, --add-exports=java.base/com.sun.net.ssl.internal.ssl=ALL-UNNAMED,java.desktop, --add-exports=java.base/sun.net.www.protocol.jar=ALL-UNNAMED,java.desktop, --add-exports=java.base/sun.security.action=ALL-UNNAMED,java.desktop, --add-exports=java.base/sun.security.provider=ALL-UNNAMED,java.desktop, --add-exports=java.base/sun.security.util=ALL-UNNAMED,java.desktop, --add-exports=java.base/sun.security.validator=ALL-UNNAMED,java.desktop, --add-exports=java.base/sun.security.x509=ALL-UNNAMED,java.desktop, --add-exports=java.base/jdk.internal.util.jar=ALL-UNNAMED,java.desktop, --add-exports=java.base/sun.net.www.protocol.http=ALL-UNNAMED,java.desktop, --add-exports=java.desktop/sun.awt.X11=ALL-UNNAMED,java.desktop, --add-exports=java.desktop/sun.applet=ALL-UNNAMED,java.desktop, --add-exports=java.desktop/sun.applet=ALL-UNNAMED,jdk.jsobject, --add-exports=java.naming/com.sun.jndi.toolkit.url=ALL-UNNAMED,java.desktop, -Dicedtea-web.bin.name=javaws, -Dicedtea-web.bin.location=/usr/lib/icedtea-web/bin/javaws]

Plugins:
+ ImportImagePlugin
+ ShapeTools (1240)
+ apache-commons (35092)
+ apache-http (34908)
+ auto_tools (73)
+ buildings_tools (35171)
+ ejml (35122)
+ geotools
+ imagery_offset_db (34908)
+ javafx-unixoid (34908)
+ jaxb (35014)
+ jna (34908)
+ jts (35122)
+ log4j (34908)
+ opendata (35156)
+ pt_assistant (34678)
+ public_transport (34977)
+ terracer (34977)
+ utilsplugin2 (35177)

Map paint styles:
+ https://josm.openstreetmap.de/josmfile?page=Styles/PublicTransport&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Styles/HiDPISupport&zip=1
- https://github.com/bastik/mapcss-tools/raw/osm/mapnik2mapcss/osm-results/mapnik.zip
- https://josm.openstreetmap.de/josmfile?page=Styles/Modified&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/PublicTransportV2&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/iD&zip=1

Last errors/warnings:
- E: java.lang.UnsatisfiedLinkError: <josm.userdata>/plugins/javafx/libavplugin-54.so: libgstreamer-lite.so: cannot open shared object file: No such file or directory
- E: java.lang.UnsatisfiedLinkError: <josm.userdata>/plugins/javafx/libavplugin-56.so: libgstreamer-lite.so: cannot open shared object file: No such file or directory
- E: java.lang.UnsatisfiedLinkError: <josm.userdata>/plugins/javafx/libavplugin-57.so: libgstreamer-lite.so: cannot open shared object file: No such file or directory
- W: No configuration settings found.  Using hardcoded default values for all pools.
- E: org.openstreetmap.josm.plugins.PluginException: An error occurred in plugin geotools. Cause: java.lang.reflect.InvocationTargetException. Cause: java.lang.NoClassDefFoundError: javax/sql/DataSource. Cause: java.lang.ClassNotFoundException: javax.sql.DataSource
- W: Disable plugin - Could not load plugin 'geotools'. Delete from preferences?
- E: org.openstreetmap.josm.plugins.PluginException: An error occurred in plugin ImportImagePlugin. Cause: java.lang.reflect.InvocationTargetException. Cause: java.lang.NoClassDefFoundError: Could not initialize class org.geotools.referencing.CRS
- W: Disable plugin - Could not load plugin 'ImportImagePlugin'. Delete from preferences?
- W: Cannot start IPv4 remotecontrol https server on port 8112: Keystore was tampered with, or password was incorrect
- W: Cannot start IPv6 remotecontrol https server on port 8112: Keystore was tampered with, or password was incorrect