ConvertWordLists errors out when pasting bullets in a nested table inside another table from Word. 

Test with the attached word doc in the https://demos.telerik.com/aspnet-ajax/editor/examples/cleaningwordformatting/defaultcs.aspx demo and you'll get the following error:

RadEditor.js:17416 Uncaught TypeError: Cannot read property 'appendChild' of null
    at b.WordListConverter.insertList (RadEditor.js:17416)
    at b.WordListConverter.convert (RadEditor.js:17570)
    at Object.convertWordLists (RadEditor.js:257)
    at Object.cleanPastedContent (RadEditor.js:146)
    at c.RadEditor._onAfterPaste (RadEditor.js:10229)
    at c.RadEditor.afterPasteDelegate (Telerik.Web.UI.WebResource.axd?_TSM_HiddenField_=ctl00_QsfScriptManager_TSM&compress=1&_TSM_CombinedScripts_=%3b%3bSystem.Web.Extensions%2c+Version%3d4.0.0.0%2c+Culture%3dneutral%2c+PublicKeyToken%3d31bf3856ad364e35%3aen-US%3ad28568d3-e53e-4706-928f-3765912b66ca%3aea597d4b%3ab25378d2:6)