Writer does not display additional carriage return characters, copied from PDF documents in Document Viewer, into MSWord documents being edited in Writer, until the document has been saved and re-opened.

Steps to reproduce:

1. Copy a two-line section of text from a PDF document in Document Viewer (I use Document Viewer 3.4, but I have been experiencing this problem for several years).

2. Paste the text into a Writer document. The text typically displays with one carriage return per line or section of text. (To display carriage returns, select "View > Nonprinting Characters" from the LibreOffice menu.)

3. Convert the text to a single paragraph by deleting the intervening carriage return/s. You can do this by either (a) placing the cursor to the immediate left of the carriage return and pressing the <Delete> key, or (b) placing the cursor at the beginning of the next line and pressing the <Backspace> key.

4. Save the document in Microsoft Word 97/XP format.

5. Reopen the Word document. The deleted carriage returns have reappeared.

The non-displayed carriage returns seem to exist immediately to the left of the carriage returns, as the following procedure shows:

A. Copy a two-line section of text into Writer, from a PDF document in Document Viewer.

B. Place the cursor immediately before the carriage return at the end of the first line, and press the <Backspace> key once only, to delete the non-displayed character. The cursor does not appear to move.

C. Delete the carriage return by pressing the <Delete> key.

D. Save the document in Microsoft Word 97/XP format, close it and reopen it. In this case, the carriage return DOES NOT reappear.