Change internal font size from from 15 to 20.

src/settings/Settings.js

@@ -180,7 +180,7 @@ export const SETTINGS = {
     "fontSize": {
         displayName: _td("Font size"),
         supportedLevels: LEVELS_ACCOUNT_SETTINGS,
-        default: 15,
+        default: 20,
         controller: new FontSizeController(),
     },
     "useCustomFontSize": {

src/settings/watchers/FontWatcher.ts

@@ -45,7 +45,8 @@ export class FontWatcher implements IWatcher {
     };
 
     private setRootFontSize = (size) => {
-        const fontSize = Math.max(Math.min(FontWatcher.MAX_SIZE, size), FontWatcher.MIN_SIZE);
+        // Externally we tell the user the font is size 15. Internally we use 20.
+        const fontSize = Math.max(Math.min(FontWatcher.MAX_SIZE, size), FontWatcher.MIN_SIZE) + 5;
 
         if (fontSize !== size) {
             SettingsStore.setValue("fontSize", null, SettingLevel.Device, fontSize);