JOSM doesn't work well when not maximized

[GerdP]

What steps will reproduce the problem?

1. start JOSM with clean home dir (JOSM opens in a non-maximized window)
2. press Ctrl+N to open a new data layer

What is the expected result?

Empty data layer and side windows for tags, relations etc are visible with reasonable geometry

What happens instead?

The side windows are far too small, barely visible and a new user probably has no idea what to do.

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

I don't see this behaviour with r18906.
Maybe this doesn't happen always. I noticed it first opening a BING layer in latest r18934, but cannot reproduce it with that version with a new data layer right now.

Build-Date:2024-01-05 09:09:15
Revision:18934
Is-Local-Build:true

Identification: JOSM/1.5 (18934 SVN de) Windows 10 64-Bit
OS Build number: Windows 10 Home 2009 (19045)
Memory Usage: 284 MB / 1753 MB (54 MB allocated, but free)
Java version: 1.8.0_272-b10, AdoptOpenJDK, OpenJDK 64-Bit Server VM
Look and Feel: com.sun.java.swing.plaf.windows.WindowsLookAndFeel
Screen: \Display0 1920×1080 (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: Cp1252
System property sun.jnu.encoding: Cp1252
Locale info: de_DE
Numbers with default locale: 1234567890 -> 1234567890
VM arguments: [-Djosm.dir.name=23362]
Dataset consistency test: No problems found