My application is in English. I translated it to Russian using the localization wizard. Pega created the app_ru ruleset. I have added it to the application ruleset stack. But even though my browser is in english, I see the Russian version on the UI. I have also tried to set my default locale to en_US but it did not work. How Pega finds the correct rule for localization ?
OK, I figured it out. It is not needed to add the localization ruleset to the application's ruleset stack. After I remove the Russian ruleset from the application stack, a user whose locale is ru_RU still sees that labels as Russian while other users on different locale see them in English.