Android Studio: Translation Editor not showing Default Value and translation

Try File --> Invalidate Caches / Restart .. It solved the same issue with me ..

In my case, Translations Editor didn't show my other languages too. But my problem was I had empty strings.xml files for those languages. I mean, like following:

<resources>
</resources>

Once I added some string in those files, even if they were empty, it began appearing in Translations Editor, such as following:

<resources>
    <string name="any_string" />
</resources>

Although you might need to click on refresh button at Translations Editor to update the view.