InDesign 16.4 on Windows.

I have an issue with spanned text.
It looks like a "break column" special character is created above and below the text when I span it across a 2 column frame. Or a text column is "skipped."
This is happening on flowing text, on primary text frames. The text was initially imported from a Word document (without styling).

This "bug" doesn't happens on on other text frames where the text was not imported.

I am trying to upload the INDD packaged rar file but the platform is saying that that type of file is not supported... Kindly text the screenshot.
You will see some empty columns above and below the spanned text that should be filled with text.