Fixup f4364c75: remove two more Update::SinglePar instances

They do not do what the author(s) of these lines thought it would do,
and can create crashes.

(cherry picked from commit 485f5afc21)

src/Text.cpp

@@ -5266,7 +5266,7 @@ void Text::dispatch(Cursor & cur, FuncRequest & cmd)
 				// Set the cursor
 				bvcur.resetAnchor();
 			if (!bv->mouseSetCursor(cur, cmd.modifier() == ShiftModifier))
-				cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
+				cur.screenUpdateFlags(Update::FitCursor);
 			// FIXME: move this to mouseSetCursor?
 			if (bvcur.wordSelection() && bvcur.inTexted())
 				expandWordSel(bvcur);
@@ -5365,9 +5365,7 @@ void Text::dispatch(Cursor & cur, FuncRequest & cmd)
 				// selectWord but bvcur is current
 				// mouse position.
 				cur.bv().cursor().setSelection();
-				// We might have removed an empty but drawn selection
-				// (probably a margin)
-				cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
+				cur.screenUpdateFlags(Update::FitCursor);
 			} else
 				cur.noScreenUpdate();
 			// FIXME: We could try to handle drag and drop of selection here.

status.24x

@@ -55,6 +55,8 @@ What's new
 
 - Fix crash when attempting to search in selection that contains only math.
 
+- Fix potential crashes when scrolling documents.
+
 - Fix bug where the dialog asking for saving unapplied changes on buffer change
   popped up twice, or sometimes not at all (bug 12954).