Bug Report | Using ts_headline with the <-> operator

PostgreSQL version: 10.15

Operating system:   Linux/Ubuntu

Bug when using ts_headline with the <-> operator

Assuming the following query:

SELECT ts_headline('simple','The Cyberpunk launch did not go as expected for Cyberpunk Fans around the world', phraseto_tsquery('simple','Cyberpunk Fans')::tsquery);

The returned result is:

The <b>Cyberpunk</b> launch did not go as expected for <b>Cyberpunk</b> <b>Fans</b> around the world

This highlights the Cyberpunk alone in addition to Cyberpunk Fans.

However, the expected output would be:

The Cyberpunk launch did not go as expected for <b>Cyberpunk</b> <b>Fans</b> around the world

Which only highlights *Cyberpunk Fans* due to the <-> operator in phraseto_tsquery.

SELECT phraseto_tsquery('simple','Cyberpunk Fans');

The above returns 'cyberpunk<-> 'fans' as expected, so presumably this is an issue with the ts_headline function.

I would be great to see this fixed/improved in the near future.

Christian