WebBrowser InnerText with html table problem

lately webBrowser.Document.Body.InnerText has the tendency to return html tables with space missing between some columns.

whereas

private object o=null;
webBrowser!.Document.Body.ExecCommand("SelectAll", DontShowUI, o);
webBrowser!.Document.Body.ExecCommand("Copy", DontShowUI, o);

will yield expected result in the clipboard. I really dislike using the clipboard as it is vulnerable to failure

Has any one else experience the same problem? is there another way to get the text correctly with proper space separation between html columns?

is the problem from .net version change or the underlying Internet explorer?