I have searched for a long time until i found the reason why i couldnt make a pageTitle multilingual in a view or in an element.

First I tried to edit the title in this way and became unhappy because it was written in the content area of my page and not in the titletag.

$this->pageTitle = __('new PageTitle');

The second parameter “true” will avoid displaying the text directly.

$this->pageTitle = __('new PageTitle', true);

So, when you write it in this way, it works!