the-one-real-estate-d.o.o.T

Problem:
Changes in original language fields for the posts aren't reflected on the secondary languages

Solution:
The fields were set to translate, when fields are set in this state, you can translate the field's value, so every time you update the original, you may need to translate the field value too.

Setting the fields state to copy fixed the issue.

Relevant Documentation:
https://wpml.org/documentation/getting-started-guide/translating-custom-fields/