https://github.com/cryptomator/cryptomator/issues/2813

> List of languages should have system default, English and then all other languages in alphabetic order.
> That is, in alphabetic order with respect to the language the list is localized in (seems to be English always)

src/main/java/org/cryptomator/launcher/SupportedLanguages.java

@@ -7,6 +7,8 @@ import org.slf4j.LoggerFactory;
 
 import javax.inject.Inject;
 import javax.inject.Singleton;
+import java.text.Collator;
+import java.util.Arrays;
 import java.util.List;
 import java.util.Locale;
 
@@ -14,10 +16,12 @@ import java.util.Locale;
 public class SupportedLanguages {
 
 	private static final Logger LOG = LoggerFactory.getLogger(SupportedLanguages.class);
-	// these are BCP 47 language codes, not ISO. Note the "-" instead of the "_":
-	public static final List<String> LANGUAGAE_TAGS = List.of("en", "ar", "be", "bn", "bs", "ca", "cs", "da", "de", "el", "es", "fil", "fa", "fr", "gl", "he", //
+	// these are BCP 47 language codes, not ISO. Note the "-" instead of the "_".
+	// "en" is not part of this list - it is always inserted at the top.
+	public static final List<String> LANGUAGE_TAGS = Arrays.asList("ar", "be", "bn", "bs", "ca", "cs", "da", "de", "el", "es", "fil", "fa", "fr", "gl", "he", //
 			"hi", "hr", "hu", "id", "it", "ja", "ko", "lv", "mk", "nb", "nl", "nn", "no", "pa", "pl", "pt", "pt-BR", "ro", "ru", "si", "sk", "sr", "sr-Latn", "sv", "sw", //
 			"ta", "te", "th", "tr", "uk", "vi", "zh", "zh-HK", "zh-TW");
+	public  static final String ENGLISH = "en";
 
 	@Nullable
 	private final String preferredLanguage;
@@ -30,10 +34,15 @@ public class SupportedLanguages {
 	public void applyPreferred() {
 		if (preferredLanguage == null) {
 			LOG.debug("Using system locale");
-			return;
+		} else {
+			var preferredLocale = Locale.forLanguageTag(preferredLanguage);
+			LOG.debug("Applying preferred locale {}", preferredLocale.getDisplayName(Locale.ENGLISH));
+			Locale.setDefault(preferredLocale);
 		}
-		var preferredLocale = Locale.forLanguageTag(preferredLanguage);
-		LOG.debug("Applying preferred locale {}", preferredLocale.getDisplayName(Locale.ENGLISH));
-		Locale.setDefault(preferredLocale);
+		SupportedLanguages.LANGUAGE_TAGS.sort((a, b) -> {
+			var collator = Collator.getInstance(Locale.getDefault());
+			collator.setStrength(Collator.PRIMARY);
+			return collator.compare(Locale.forLanguageTag(a).getDisplayName(), Locale.forLanguageTag(b).getDisplayName());
+		});
 	}
 }

src/main/java/org/cryptomator/ui/preferences/InterfacePreferencesController.java

@@ -1,6 +1,5 @@
 package org.cryptomator.ui.preferences;
 
-import com.google.common.base.Strings;
 import org.cryptomator.common.LicenseHolder;
 import org.cryptomator.common.settings.Settings;
 import org.cryptomator.common.settings.UiTheme;
@@ -66,8 +65,10 @@ public class InterfacePreferencesController implements FxController {
 
 		showTrayIconCheckbox.selectedProperty().bindBidirectional(settings.showTrayIcon());
 
-		preferredLanguageChoiceBox.getItems().add(null);
-		preferredLanguageChoiceBox.getItems().addAll(SupportedLanguages.LANGUAGAE_TAGS);
+		// System default and English at the top of the list
+		preferredLanguageChoiceBox.getItems().add(Settings.DEFAULT_LANGUAGE);
+		preferredLanguageChoiceBox.getItems().add(SupportedLanguages.ENGLISH);
+		preferredLanguageChoiceBox.getItems().addAll(SupportedLanguages.LANGUAGE_TAGS);
 		preferredLanguageChoiceBox.valueProperty().bindBidirectional(settings.languageProperty());
 		preferredLanguageChoiceBox.setConverter(new LanguageTagConverter(resourceBundle));
 
@@ -141,9 +142,7 @@ public class InterfacePreferencesController implements FxController {
 				return resourceBundle.getString("preferences.interface.language.auto");
 			} else {
 				var locale = Locale.forLanguageTag(tag);
-				var lang = locale.getDisplayLanguage(locale);
-				var region = locale.getDisplayCountry(locale);
-				return lang + (Strings.isNullOrEmpty(region) ? "" : " (" + region + ")");
+				return locale.getDisplayName();
 			}
 		}
 

src/test/java/org/cryptomator/launcher/SupportedLanguagesTest.java

@@ -25,7 +25,7 @@ public class SupportedLanguagesTest {
 	}
 
 	public static Stream<String> languageTags() {
-		return SupportedLanguages.LANGUAGAE_TAGS.stream() //
+		return SupportedLanguages.LANGUAGE_TAGS.stream() //
 				.filter(tag -> !"en".equals(tag)); // english uses the default bundle
 	}
 }