Words with blank translation cannot be turned into links

(Android app)

At the end of a lesson, I always review the list of soon-to-be-committed-as “known words”, and regularly turn 1 or more into links by clicking on the ‘+’ button/icon.

Problem: sometimes the word I want to turn into a link has no translation (see image below), and in this case the button is inactive and I cannot prevent it from being marked as “known”.

Text source: Cómo desarrollar el pensamiento crítico de los niños en la era de la desinformación

Thanks, we will investigate this.

@zoran another example, this time on a tablet.

Source text: El anuncio de las pelotas saltarinas botando San Francisco abajo de los Sony Bravia cumple hoy veinte años

@zoran

Similar problem in sentence mode:

Thanks, our team is looking into this.