add slider title to message.json

_locales/en/messages.json

@@ -1471,6 +1471,10 @@
       "Warning! Lowering the TTL could result in messages being lost if the recipient doesn't collect them in time!",
     "description": "Warning for the time to live setting"
   },
+  "zoomFactorSettingTitle": {
+    "message": "Zoom Factor",
+    "description": "Title of the Zoom Factor setting"
+  },
   "notificationSettingsDialog": {
     "message": "When messages arrive, display notifications that reveal...",
     "description": "Explain the purpose of the notification settings"

ts/components/session/settings/SessionSettingListItem.tsx

@@ -114,7 +114,7 @@ export class SessionSettingListItem extends React.Component<Props, State> {
                 min={60}
                 max={200}
                 defaultValue={currentSliderValue}
-                onAfterChange={sliderValue => {
+                onChange={sliderValue => {
                   this.handleSlider(sliderValue);
                 }}
                 />

ts/components/session/settings/SessionSettings.tsx

@@ -474,7 +474,7 @@ export class SettingsView extends React.Component<SettingsViewProps, State> {
       {
         id: 'zoom-factor-setting',
         title: window.i18n('zoomFactorSettingTitle'),
-        description: window.i18n('zoomFactorSettingTitleDescription'),
+        description: undefined,
         hidden: false,
         type: SessionSettingType.Slider,
         category: SessionSettingCategory.Appearance,