[patch] Inconsistent notification position

[gaben]

What steps will reproduce the problem?

1. Do something which produces a notification (upload, tool error etc.)
2. Pay attention of the notification position
3. Repeat steps 1-2 with full screen mode

What is the expected result?

Notification position is consistent among viewing modes.

What happens instead?

Full screen messes up the notifications position and also in normal mode the position is a bit off.

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

Revision:18750
Is-Local-Build:true
Build-Date:2023-06-11 16:13:37

Identification: JOSM/1.5 (18750 SVN en) Linux Ubuntu 20.04.6 LTS
Memory Usage: 236 MB / 2480 MB (75 MB allocated, but free)
Java version: 11.0.19+7-post-Ubuntu-0ubuntu120.04.1, Ubuntu, OpenJDK 64-Bit Server VM
Look and Feel: javax.swing.plaf.metal.MetalLookAndFeel
Screen: :0.0 1918×1020 (scaling 1.00×1.00)
Maximum Screen Size: 1918×1020
Best cursor sizes: 16×16→16×16, 32×32→32×32
Environment variable LANG: hu_HU.UTF-8
System property file.encoding: UTF-8
System property sun.jnu.encoding: UTF-8
Locale info: en_HU
Numbers with default locale: 1234567890 -> 1234567890
Desktop environment: ubuntu:GNOME
Java package: openjdk-11-jre:amd64-11.0.19+7~us1-0ubuntu1~20.04.1
Java ATK Wrapper package: libatk-wrapper-java:all-0.37.1-1
fonts-noto: fonts-noto:-
VM arguments: [-Dfile.encoding=UTF-8]
Program arguments: [--debug, ${HOME}/Letöltések/Teleki_cycle.osm.gz]
Dataset consistency test: No problems found

Plugins:
+ utilsplugin2 (36079)

Validator rules:
+ https://josm.openstreetmap.de/josmfile?page=Rules/Runways&zip=1

[gaben]

fix gif position