UI:

* remove restart notice for volume type
* only show restart label, when switching between macFUSE and FUSET

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

@@ -33,6 +33,7 @@ public class VolumePreferencesController implements FxController {
 	private final ObservableValue<Boolean> mountToDriveLetterSupported;
 	private final ObservableValue<Boolean> mountFlagsSupported;
 	private final ObservableValue<Boolean> readonlySupported;
+	private final ObservableValue<Boolean> macFuseAndFUSETRestartRequired;
 	private final Lazy<Application> application;
 	private final List<MountService> mountProviders;
 	public ChoiceBox<MountService> volumeTypeChoiceBox;
@@ -53,6 +54,12 @@ public class VolumePreferencesController implements FxController {
 		this.mountToDriveLetterSupported = selectedMountService.map(s -> s.hasCapability(MountCapability.MOUNT_AS_DRIVE_LETTER));
 		this.mountFlagsSupported = selectedMountService.map(s -> s.hasCapability(MountCapability.MOUNT_FLAGS));
 		this.readonlySupported = selectedMountService.map(s -> s.hasCapability(MountCapability.READ_ONLY));
+		var mountServiceAtStart = selectedMountService.getValue();
+		this.macFuseAndFUSETRestartRequired = selectedMountService.map(s -> isFUSETOrMacFUSE(mountServiceAtStart) && isFUSETOrMacFUSE(s) && !mountServiceAtStart.equals(s));
+	}
+
+	private boolean isFUSETOrMacFUSE(MountService service) {
+		return List.of("org.cryptomator.frontend.fuse.mount.MacFuseMountProvider", "org.cryptomator.frontend.fuse.mount.FuseTMountProvider").contains(service.getClass().getName());
 	}
 
 	public void initialize() {
@@ -129,6 +136,14 @@ public class VolumePreferencesController implements FxController {
 		return mountFlagsSupported.getValue();
 	}
 
+	public ObservableValue<Boolean> macFuseAndFUSETRestartRequiredProperty() {
+		return macFuseAndFUSETRestartRequired;
+	}
+
+	public boolean isMacFuseAndFUSETRestartRequired() {
+		return macFuseAndFUSETRestartRequired.getValue();
+	}
+
 	/* Helpers */
 
 	private class MountServiceConverter extends StringConverter<MountService> {

src/main/resources/css/dark_theme.css

@@ -116,6 +116,10 @@
 	-fx-font-size: 0.64em;
 }
 
+.label-red {
+	-fx-text-fill: RED_5;
+}
+
 .text-flow > * {
 	-fx-fill: TEXT_FILL;
 }

src/main/resources/css/light_theme.css

@@ -116,6 +116,10 @@
 	-fx-font-size: 0.64em;
 }
 
+.label-red {
+	-fx-text-fill: RED_5;
+}
+
 .text-flow > * {
 	-fx-fill: TEXT_FILL;
 }

src/main/resources/fxml/preferences_volume.fxml

@@ -32,6 +32,8 @@
 			</Hyperlink>
 		</HBox>
 
+		<Label styleClass="label-red" text="To apply the changes, Cryptomator needs to be restarted." visible="${controller.macFuseAndFUSETRestartRequired}" managed="${controller.macFuseAndFUSETRestartRequired}"/>
+
 		<HBox spacing="12" alignment="CENTER_LEFT" visible="${controller.loopbackPortSupported}" managed="${controller.loopbackPortSupported}">
 			<Label text="%preferences.volume.tcp.port"/>
 			<NumericTextField fx:id="loopbackPortField"/>

src/main/resources/i18n/strings.properties

@@ -275,7 +275,7 @@ preferences.interface.showMinimizeButton=Show minimize button
 preferences.interface.showTrayIcon=Show tray icon (requires restart)
 ## Volume
 preferences.volume=Virtual Drive
-preferences.volume.type=Volume Type (requires restart)
+preferences.volume.type=Volume Type
 preferences.volume.type.automatic=Automatic
 preferences.volume.docsTooltip=Open the documentation to learn more about the different volume types.
 preferences.volume.tcp.port=TCP Port