Thank you for your answer, @firstdefence.
No, I didn't mean the Paragraph panel.
In InDesign, when you use the Justified option (on the panel for example) this option has a default functionality who adjust not only line by line but all the lines of a paragraph in order to avoid “rivers of white” i.e. cracks in the loop of the Paragraph. So, sometimes, the second line of a Paragraph changes of justification when we add a word at the latest line.
See this articles : Text composition and Paragraph composer.
The next time I encounter a text where the use of paragraph composer is obvious, I'll send it to you; so we'll compare the results of InDesign vs Publisher.
Best regards.