Add integration test coverage of insert spaces issue

tests/reference/guiEditor_Main_Final_nwProject.nwx

@@ -1,5 +1,5 @@
 <?xml version='1.0' encoding='utf-8'?>
-<novelWriterXML appVersion="1.5-beta2" hexVersion="0x010500b2" fileVersion="1.3" timeStamp="2021-08-31 00:03:45">
+<novelWriterXML appVersion="1.6.3" hexVersion="0x010603f0" fileVersion="1.3" timeStamp="2022-09-29 14:24:23">
   <project>
     <name>New Project</name>
     <title></title>
@@ -15,8 +15,8 @@
     <autoOutline>True</autoOutline>
     <lastEdited>0e17daca5f3e1</lastEdited>
     <lastViewed>None</lastViewed>
-    <lastWordCount>126</lastWordCount>
-    <novelWordCount>99</novelWordCount>
+    <lastWordCount>142</lastWordCount>
+    <novelWordCount>115</novelWordCount>
     <notesWordCount>27</notesWordCount>
     <autoReplace/>
     <titleFormat>
@@ -85,10 +85,10 @@
       <status>New</status>
       <exported>True</exported>
       <layout>DOCUMENT</layout>
-      <charCount>612</charCount>
-      <wordCount>95</wordCount>
-      <paraCount>10</paraCount>
-      <cursorPos>768</cursorPos>
+      <charCount>693</charCount>
+      <wordCount>111</wordCount>
+      <paraCount>12</paraCount>
+      <cursorPos>917</cursorPos>
     </item>
     <item handle="44cb730c42048" order="1" parent="None">
       <name>Plot</name>