Fixes #3965 - Can not start a row in a knowledge base article with a linked answer

app/assets/javascripts/app/controllers/_ui_element/richtext_additions/_rich_text_tool_button.coffee

@@ -30,11 +30,12 @@ class App.UiElement.richtext.additions.RichTextToolButton
       html:      true
       animation: false
       delay:     0
-      placement: 'auto'
+      placement: 'top'
       theme:     'dark'
       content:   content
-      container: 'body'
-      template:  '<div class="popover popover--has-horizontal-form" role="tooltip"><div class="arrow"></div><h2 class="popover-title"></h2><div class="popover-content"></div></div>'
+      container: '.page-content .main'
+      viewport:  { selector: '.page-content .main', padding: 10 }
+      template:  '<div class="popover popover--has-horizontal-form popover--richtextpopover" role="tooltip"><div class="arrow"></div><h2 class="popover-title"></h2><div class="popover-content"></div></div>'
 
     hash
 

app/assets/javascripts/app/controllers/_ui_element/richtext_additions/_rich_text_tool_popup.coffee

@@ -40,6 +40,16 @@ class App.UiElement.richtext.additions.RichTextToolPopup extends App.ControllerF
 
     $(@event.currentTarget).on('hidden.bs.popover', (e) => @willClose(e))
 
+    $(document).on('click', @onClickingBackround)
+
+  onClickingBackround: (e) =>
+    return true if @el[0].contains(e.target)
+
+    e.preventDefault()
+    e.stopPropagation()
+
+    $(@event.currentTarget).popover('destroy')
+
   getAjaxAttributes: (field, attributes) ->
     @delegate?.getAjaxAttributes?(field, attributes)
 
@@ -152,5 +162,5 @@ class App.UiElement.richtext.additions.RichTextToolPopup extends App.ControllerF
         textEditor = $(@event.currentTarget).closest('.richtext.form-control').find('[contenteditable]')
         textEditor.find('span.highlight-emulator').contents().unwrap()
 
+    $(document).off('click', @onClickingBackround)
     $(@event.currentTarget).off('hidden.bs.popover')
-    $(e.currentTarget).popover('destroy')

app/assets/javascripts/app/controllers/_ui_element/richtext_additions/popup_answer.coffee

@@ -21,6 +21,10 @@ class App.UiElement.richtext.additions.RichTextToolPopupAnswer extends App.UiEle
   apply: (callback) ->
     id = @el.find('input').val()
     object = App.KnowledgeBaseAnswerTranslation.find(id)
+
+    if !object
+      return
+
     textEditor = $(@event.currentTarget).closest('.richtext.form-control').find('[contenteditable]')
 
     switch @selection.type
@@ -33,8 +37,15 @@ class App.UiElement.richtext.additions.RichTextToolPopupAnswer extends App.UiEle
       when 'caret'
         newElem = $('<a>')
         @applyOnto(newElem, object, object.title)
+
+        selectionElem = @selection.dom[0]
+
+        if selectionElem.splitText
           @selection.dom[0].splitText(@selection.offset)
           newElem.insertAfter(@selection.dom)
+        else
+          newElem.prependTo(@selection.dom)
+
       when 'range'
         placeholder = textEditor.find('span.highlight-emulator')
         newElem = $('<a>')

app/assets/javascripts/app/lib/mixins/popover_providable.coffee

@@ -50,7 +50,7 @@ App.PopoverProvidable =
 
   anyPopoversDestroy: ->
     # do not remove permanent .popover--notifications widget
-    $('.popover:not(.popover--notifications)').remove()
+    $('.popover:not(.popover--notifications,.popover--richtextpopover)').remove()
 
   extended: ->
     @include InstanceMethods