From 96d49788afd9c1b71cfa6b568d5cfb88785f6cca Mon Sep 17 00:00:00 2001
From: Juergen Spitzmueller <spitz@lyx.org>
Date: Sat, 11 Jan 2020 18:11:26 +0100
Subject: [PATCH] Do not track deletion of empty paragraph

Fixes #10412
---
 src/Text.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Text.cpp b/src/Text.cpp
index 7b7e67bbb7..6d5f7dd6b8 100644
--- a/src/Text.cpp
+++ b/src/Text.cpp
@@ -1733,7 +1733,8 @@ bool Text::backspace(Cursor & cur)
 		Cursor prev_cur = cur;
 		--prev_cur.pit();
 
-		if (!prev_cur.paragraph().isMergedOnEndOfParDeletion(cur.buffer()->params().track_changes)) {
+		if (cur.paragraph().size() > 0
+		    && !prev_cur.paragraph().isMergedOnEndOfParDeletion(cur.buffer()->params().track_changes)) {
 			cur.recordUndo(prev_cur.pit(), prev_cur.pit());
 			prev_cur.paragraph().setChange(prev_cur.lastpos(), Change(Change::DELETED));
 			setCursorIntern(cur, prev_cur.pit(), prev_cur.lastpos());
-- 
2.39.5