Previously, if you opened certain PDFs in Publisher and did not select "Group lines of text in text frames", it would render the text as a regular text frame.
In 1.8.4 these same imported PDFs now render the text as artistic tex in Publisher.
This is a bug, as artistic text is a Serif invention, so a PDF created in another app would never use artistic text.
It's very annoying, because artistic text frames cannot have their dimensions adjusted (doing that just causes the text to stretch). If you have a PDF document with 100+ pages then having to copy and paste the text as a text frame is a nightmare (especially as in the past you could use automationation software such as Keyboard Maestro to batch resize the frames on multiple pages without having to copy and paste the text first).
If you tick the box, "Group lines of text in text frames", then the text will not be set as artistic text. But then those text frames can cause flow problems when removing lines.
Please revert it back so that all text rendered from an imported PDF is always set as a regular text frame and not artistic text.