Bug with FIndNext and Normal search pattern provider

Hello,

there is a bug with the FindNext (and also ReplaceNext) method :

public void testFindNext() {
            CodeDocument doc = new CodeDocument();
            EditorSearchOptions opt = new EditorSearchOptions { FindText = "A", MatchWholeWord = true, SearchUp = false, PatternProvider = SearchPatternProviders.Normal };
            doc.SetText("AA");
           ISearchResult  r =  doc.CurrentSnapshot.FindNext(opt, 2, true).Results.FirstOrDefault();
           bool haveBug = r != null;
           opt.MatchWholeWord = false; 
           r = doc.CurrentSnapshot.FindNext(opt, 2, true).Results.FirstOrDefault();
           haveBug = r != null; 
           doc.SetText("@A");
           opt.MatchWholeWord = true;
           r = doc.CurrentSnapshot.FindNext(opt, 2, true).Results.FirstOrDefault();
           haveBug = r != null;
        }

For the first search with the "AA" text and MatchWholeWorld = true the result is the one expected, i.e null.

For the second search with the "AA" text and MatchWholeWorld = false the result is not the one expected. There is a match though it should not.

For the third search with the "@A" text and MatchWholeWorld = true the result is not the one expected. There is a match though it should not.

So two kinds of problems : the one with MatchWholeWorld = false and the one with the @ (and possibly other as I can see, such as $ and [ and ..)

Regards.