Reciprocal links not working right

[martin-neumann-gurus]

Describe the bug
Setting a link is working fine, but the reciprocal link is gibberish

To Reproduce
Steps to reproduce the behavior:

1. Set up 2 different languages, in my case en_US and pt_BR
2. Write a post on each language
3. At the en_US site I set the title of the pt_BR article and update
4. The English site has the correct link like for examle:
   https://www.saudeplena.org/verdade-sobre-coronavirus/
   The reciprocal link is not a valid article, like:
   https://www.abundanthealth.info/b89565a8f360c821c06679cc18444944/

Expected behaviour
It should link back to the English article

Environment (please complete the following information):

• OS: [e.g. iOS]
• Browser any browser
• PHP Version PHP 7.3.25
• Plugin Version 2.4.9
• Wordpress 5.6

Additional context
Add any other context about the problem here.

[lloc]

These posts seem to be tied together as expected. MSLS is using the id of a post and builds the link at run-time with the help of the Wordpress API.

[martin-neumann-gurus]

It works after me setting the link on both articles. But if I am setting it on one article only, the other link is going wrong. Sorry, on my side I have this problem.

[lloc]

Do you have other subsites in that network?

[martin-neumann-gurus]

I have other sites in the network, but they are not part of MSLS. That far I have only those 2 languages configured.