This issue still exists after releasing the new version (1.3.13)
I also second this request, in particular for WPML (the industry standard) and Polylang (emerging).
It is most likely a matter of configuration. Did you read this:
https://qtranslatexteam.wordpress.com/faq/#CustomFields ? Search for “Custom Filters” etc.
I think it’s something more complicated and it would require the developer to actively implement a solution.
After 4 months still nothing?
Ok, i’ve found solution on my own.
file: ./wp-nested-pages/app/Views/partials/row.php
line: 20
from:
<span class="title"><?php echo $this->post->title; ?></span>
to:
<span class="title"><?php echo apply_filters( 'the_title', $this->post->title ); ?></span>
Then brackets dissapear and current lang will be displayed.
apply_filters( 'the_title', $this->post->title );
