Editor is not maintaining the Format of text, specifically the bullet numbers, when copied from MS word.
You can use the attached content to reproduce the problem in the Overview demo of the control.
The problem will be fixed in R3 2020.
For the old versions you can fix it with this override:
<script>
Telerik.Web.UI.Editor.Utils.clearLists = function(domObject, stylesToKeep) {
var $ = $telerik.$;
var orderedLists = $(domObject).find('OL');
$(orderedLists).removeAttr('type');
// $(orderedLists).removeAttr('start');
}
</script>
<telerik:RadEditor RenderMode="Lightweight" ID="RadEditor1" runat="server" Height="800">
</telerik:RadEditor>
Regards,
Rumen
Progress Telerik