Index: src/org/openstreetmap/josm/gui/MainApplication.java
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- src/org/openstreetmap/josm/gui/MainApplication.java	(revision 16494)
+++ src/org/openstreetmap/josm/gui/MainApplication.java	(date 1590349369959)
@@ -868,6 +868,8 @@
 
         setupCallbacks();
 
+        setupUIManager();
+
         final SplashScreen splash = GuiHelper.runInEDTAndWaitAndReturn(SplashScreen::new);
         // splash can be null sometimes on Linux, in this case try to load JOSM silently
         final SplashProgressMonitor monitor = splash != null ? splash.getProgressMonitor() : new SplashProgressMonitor(null, e -> {
@@ -902,7 +904,6 @@
         }
 
         monitor.indeterminateSubTask(tr("Setting defaults"));
-        setupUIManager();
         toolbar = new ToolbarPreferences();
         ProjectionPreference.setProjection();
         setupNadGridSources();