diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index eec45f75b..fbcffe1c5 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -16,7 +16,7 @@ Bugfixes:
  - Fixed amendment csv export (added missing submitters and recommendation, removed
    html tags for old and new text) [#3942].
  - Fixed motion/amendment diff bug: does not delete a paragraph/list item
-   before an new one was inserted [#3943].
+   before an new one was inserted [#3943, #3946].
 
 
 Version 2.3 (2018-09-20)
diff --git a/openslides/motions/static/js/motions/diff.js b/openslides/motions/static/js/motions/diff.js
index 8600986e6..d0bb9958a 100644
--- a/openslides/motions/static/js/motions/diff.js
+++ b/openslides/motions/static/js/motions/diff.js
@@ -1257,13 +1257,14 @@ angular.module('OpenSlidesApp.motions.diff', ['OpenSlidesApp.motions.lineNumberi
 
             if (lineLength !== undefined) {
                 oldTextWithBreaks = lineNumberingService.insertLineNumbersNode(oldText, lineLength, null, firstLineNumber);
-                newTextWithBreaks = lineNumberingService.insertLineNumbersNode(newText, lineLength, null, firstLineNumber);
+                newText = lineNumberingService.insertLineBreaksWithoutNumbers(newText, lineLength);
             } else {
                 oldTextWithBreaks = document.createElement('div');
                 oldTextWithBreaks.innerHTML = oldText;
-                newTextWithBreaks = document.createElement('div');
-                newTextWithBreaks.innerHTML = newText;
             }
+            newText = newText.replace(/^\s+/g, '').replace(/\s+$/g, '');
+            newTextWithBreaks = document.createElement('div');
+            newTextWithBreaks.innerHTML = newText;
 
             for (var i = 0; i < oldTextWithBreaks.childNodes.length; i++) {
                 currChild = oldTextWithBreaks.childNodes[i];
diff --git a/openslides/motions/static/js/motions/linenumbering.js b/openslides/motions/static/js/motions/linenumbering.js
index d978e2d01..abac72007 100644
--- a/openslides/motions/static/js/motions/linenumbering.js
+++ b/openslides/motions/static/js/motions/linenumbering.js
@@ -68,6 +68,8 @@ angular.module('OpenSlidesApp.motions.lineNumbering', [])
                 return this._ignoreInsertedText;
             } else if (this._isOsLineNumberNode(node)) {
                 return true;
+            } else if (node.classList && node.classList.contains('insert')) {
+                return true;
             } else {
                 return false;
             }
@@ -448,7 +450,7 @@ angular.module('OpenSlidesApp.motions.lineNumbering', [])
                 throw 'This method may only be called for ELEMENT-nodes: ' + node.nodeValue;
             }
             if (this._isIgnoredByLineNumbering(node)) {
-                if (this._currentInlineOffset === 0 && this._currentLineNumber !== null) {
+                if (this._currentInlineOffset === 0 && this._currentLineNumber !== null && this._isInlineElement(node)) {
                     var lineNumberNode = this._createLineNumber();
                     if (lineNumberNode) {
                         node.insertBefore(lineNumberNode, node.firstChild);
diff --git a/tests/karma/motions/diff.service.test.js b/tests/karma/motions/diff.service.test.js
index 0e32d88e1..96498931b 100644
--- a/tests/karma/motions/diff.service.test.js
+++ b/tests/karma/motions/diff.service.test.js
@@ -717,6 +717,20 @@ describe('linenumbering', function () {
       );
     });
 
+    it('works with a replaced list item', function () {
+      var before = "<ul><li>Lorem ipsum <strong>dolor sit amet</strong>, consetetur sadipscing elitr, sed diam nonumy eirmod tempor.</li></ul>",
+          after = "<ul>\n<li>\n<p>At vero eos et accusam et justo duo dolores et ea rebum.</p>\n</li>\n</ul>\n",
+          expected = '<UL class="delete"><LI>' + noMarkup(1) + 'Lorem ipsum <STRONG>dolor sit amet</STRONG>, consetetur sadipscing elitr, sed diam nonumy ' + brMarkup(2) + 'eirmod tempor.</LI></UL>' +
+          "<UL class=\"insert\">\n<LI>\n<P>At vero eos et accusam et justo duo dolores et ea rebum.</P>\n</LI>\n</UL>";
+
+      var diff = diffService.diff(before, after, 80);
+
+      diff = diffService._normalizeHtmlForDiff(diff);
+      expected = diffService._normalizeHtmlForDiff(expected);
+
+      expect(diff.toLowerCase()).toBe(expected.toLowerCase());
+    });
+
     it('detects broken HTML and lowercases class names', function () {
         var before = "<p><span class=\"line-number-3 os-line-number\" data-line-number=\"3\" contenteditable=\"false\">&nbsp;</span>holen, da rief sie alle sieben herbei und sprach:</p>\n\n<p><span class=\"line-number-4 os-line-number\" data-line-number=\"4\" contenteditable=\"false\">&nbsp;</span><span style=\"color: #000000;\">\"Liebe Kinder, ich will hinaus in den Wald, seid auf der Hut vor dem Wolf! Wenn er <br class=\"os-line-break\"><span class=\"line-number-5 os-line-number\" data-line-number=\"5\" contenteditable=\"false\">&nbsp;</span>hereinkommt, frisst er euch alle mit Haut und Haar. Der Bösewicht verstellt sich oft, aber <br class=\"os-line-break\"><span class=\"line-number-6 os-line-number\" data-line-number=\"6\" contenteditable=\"false\">&nbsp;</span>an der rauen Stimme und an seinen schwarzen Füßen werdet ihr ihn schon erkennen.\"</span></p>\n\n<p><span class=\"line-number-7 os-line-number\" data-line-number=\"7\" contenteditable=\"false\">&nbsp;</span>Die Geißlein sagten: \" Liebe Mutter, wir wollen uns schon in acht nehmen, du kannst ohne </p>",
             after = "<p>holen, da rief sie alle sieben herbei und sprach:</p>\n\n<p><span style=\"color: #000000;\">Hello</span></p>\n\n<p><span style=\"color: #000000;\">World</span></p>\n\n<p><span style=\"color: #000000;\">Ya</span></p>\n\n<p>Die Geißlein sagten: \" Liebe Mutter, wir wollen uns schon in acht nehmen, du kannst ohne</p>";
diff --git a/tests/karma/motions/linenumbering.service.test.js b/tests/karma/motions/linenumbering.service.test.js
index f02c8d38a..9fe59d5a0 100644
--- a/tests/karma/motions/linenumbering.service.test.js
+++ b/tests/karma/motions/linenumbering.service.test.js
@@ -328,6 +328,14 @@ describe('linenumbering', function () {
       expect(lineNumberingService.insertLineBreaksWithoutNumbers(outHtml, 80)).toBe(outHtml);
     });
 
+    it('does not count within .insert nodes', function () {
+      var inHtml = "<p>1234</p><ul class=\"insert\"><li>1234</li></ul><p>1234 1234</p>";
+      var outHtml = lineNumberingService.insertLineNumbers(inHtml, 10);
+      expect(outHtml).toBe('<p>' + noMarkup(1) + '1234</p><ul class="insert"><li>1234</li></ul><p>' + noMarkup(2) + '1234 1234</p>');
+      expect(lineNumberingService.stripLineNumbers(outHtml)).toBe(inHtml);
+      expect(lineNumberingService.insertLineBreaksWithoutNumbers(outHtml, 80)).toBe(outHtml);
+    });
+
     it('does not create a new line for a trailing INS', function () {
       var inHtml = "<p>et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur<ins>dsfsdf23</ins></p>";
       var outHtml = lineNumberingService.insertLineNumbers(inHtml, 80);