when "starting hidden", only minimize when there is no tray icon

src/main/java/org/cryptomator/ui/fxapp/FxApplication.java

@@ -50,15 +50,23 @@ public class FxApplication {
 		applicationTerminator.initialize();
 
 		// init system tray
+		final boolean hasTrayIcon;
 		if (SystemTray.isSupported() && settings.showTrayIcon().get()) {
 			trayMenu.get().initializeTrayIcon();
 			Platform.setImplicitExit(false); // don't quit when closing all windows
+			hasTrayIcon = true;
+		} else {
+			hasTrayIcon = false;
 		}
 
 		// show main window
 		appWindows.showMainWindow().thenAccept(stage -> {
 			boolean hide = settings.startHidden().get();
-			stage.setIconified(hide);
+			if (hasTrayIcon) {
+				stage.hide();
+			} else {
+				stage.setIconified(hide);
+			}
 		});
 
 		launchEventHandler.startHandlingLaunchEvents();

src/main/java/org/cryptomator/ui/fxapp/FxApplicationWindows.java

@@ -18,8 +18,7 @@ import org.slf4j.LoggerFactory;
 
 import javax.inject.Inject;
 import javafx.application.Platform;
-import javafx.beans.binding.Bindings;
-import javafx.beans.value.ObservableValue;
+import javafx.collections.ListChangeListener;
 import javafx.collections.transformation.FilteredList;
 import javafx.scene.Scene;
 import javafx.stage.Stage;
@@ -83,13 +82,14 @@ public class FxApplicationWindows {
 
 		// observe visible windows
 		if (trayIntegration.isPresent()) {
-			Bindings.isNotEmpty(visibleWindows).addListener(this::visibleWindowsChanged);
+			visibleWindows.addListener(this::visibleWindowsChanged);
 		}
 	}
 
-	private void visibleWindowsChanged(@SuppressWarnings("unused") ObservableValue<? extends Boolean> observableValue, @SuppressWarnings("unused") boolean oldValue, boolean newValue) {
-		LOG.debug("has visible stages: {}", newValue);
-		if (newValue) {
+	private void visibleWindowsChanged(ListChangeListener.Change<? extends Window> change) {
+		int visibleWindows = change.getList().size();
+		LOG.debug("visible windows: {}", visibleWindows);
+		if (visibleWindows > 0) {
 			trayIntegration.ifPresent(TrayIntegrationProvider::restoredFromTray);
 		} else {
 			trayIntegration.ifPresent(TrayIntegrationProvider::minimizedToTray);