All,

  For the longest time, I didn't think libre-writer was capable of using the select buffer to highlight->middle-mouse paste on Linux. The problem is the contents of the select-buffer are not persistent. Meaning, if you highlight text and then move down in the document where the text is needed and left-click to position the cursor for the paste the select-buffer is empty. 

  The only way select-buffer paste works is if you highlight the text, then move down (*without* being able to affirmatively position with a left-click) and middle-mouse click while the text above is still highlighted. That's nuts.

  With every other linux app, from konsole to kwrite to gedit, etc.. when you highlight information, that information is stored in the select-buffer and it remains there until overwritten with new information. That information is not lost simply because the original text is no longer highlighted. 

  That allows the needed control of being able to affirmatively place the cursor in the position where the text will be pasted and then middle-mouse paste. This is critical when dealing with subscript/superscript or typeface changes, etc...

  Please determine why the select-buffer is not persistent in libre office and why it is wiped out if the original text is no longer highlighted and make it so once information is placed in the select-buffer by highlighting something, that text stays there until it is overwritten by something else, not emptied when click the left mouse button somethere else.