Fix bug #11817.

Preserve line spacing when breaking a paragraph at the beginning.

(cherry picked from commit f7065fa22e)

src/Text.cpp

@@ -693,6 +693,7 @@ static void breakParagraph(Text & text, pit_type par_offset, pos_type pos,
 
 		tmp->params().depth(par.params().depth());
 		tmp->params().noindent(par.params().noindent());
+		tmp->params().spacing(par.params().spacing());
 
 		// move everything behind the break position
 		// to the new paragraph

status.23x

@@ -95,6 +95,9 @@ What's new
 - Disallow adding columns with gathered environment as this is not
   supported (bug 11812).
 
+- Preserve paragarph spacing when breaking a paragraph at the start
+  (bug 11817).
+
 
 * INTERNALS