Reader can't actually edit PDF files. You can mark it up, though, and then send it to someone else to edit the original and create a new PDF, but that means adding comments. This is a correct workflow for revising a file.
If you are using Adobe Reader, you are most likely adding comment. If you are using Adobe Acrobat ensure you are not using Add comment tool. If you need to add text, try Edit PDF tool: https://adobe.ly/3JfKKhU;
Let us know if you have further questions, or if this doesn't answer your question kindly elaborate your question.
Don't add a comment at all. That's not a good way to add text to a PDF. Editing PDFs is a pretty awful experience anyway, and if an original exists that should be edited. If you must edit, use the Edit tools, not the Comment tools.
A
Anonymous
December 31, 2019
Thanks. I don't want to add a comment.
However, whenever I add a line an associated comment appears by default.
I've gone through all options on Editing > Preferences > Commenting but haven't found anything.
I cannot use the "Edit tools" because I'm working with the free version.
You cannot add text with the free software, only comments. So what you add is always and only a comment. (You are seeing a popup box as well, but your text is also a comment, even without a pop-up box). Comments may not be shown or printed by all software.
I suggest you edit your original (eg Word document) and re-make the PDF, even if editing the PDF seems easier.
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