按下热键时，Summernote编辑器会将光标移至第一行

Question

我正在使用summenote，最近我在summernote中应用了代码，将<b>和<i>之类的标签更改为<strong>和<em>，该代码运行得很好，但是我开始遇到一个问题，现在每当我按下bold和italics的热键时，键入光标就会再次回到第一行。

下面是我用来转换标签的代码：

function clean_html(editor, type, value)
        {
            if (value.indexOf("<"+type+">") >= 0)
                {
                    if(type == "b")
                        {
                            marca = /<b(?:.*?)>(?:.*?)<\/b>/g;
                            replaceIniTag = "<strong>";
                            replaceEndTag = "</strong>";
                        }
                    else
                        {
                            marca = /<i(?:.*?)>(?:.*?)<\/i>/g;
                            replaceIniTag = "<em>";
                            replaceEndTag = "</em>";
                        }
                    var matches = value.match(marca), 
                    len = matches.length,
                    i;
                    for (i = 0; i < len; i++)
                        {
                            str = $(matches[i]).text();
                            str = replaceIniTag+str+replaceEndTag;
                            value = value.replace(matches[i], str);
                        }
                    $('#post_content').summernote('code', value); //Replace the editor content
                }
        }

下面是我在初始化summernote时使用的代码。

$('#post_content').summernote(
        {
            height: 200,
            focus: false,
            disableDragAndDrop: true,
            popover: {
                        image: [],
                        link: [],
                        air: []
                      },
            // disableResizeEditor: true,
            placeholder: "Type Your Post Content...",
            toolbar: [
                        ['cleaner',['cleaner']], // The Button
                        ['style', ['style']],
                        // ['style', ['bold', 'italic', 'underline', 'strikethrough', 'superscript', 'subscript', 'clear']],
                        ['style', ['bold', 'italic', 'underline', 'strikethrough', 'superscript', 'subscript']],
                        // ['fontname', ['fontname']],
                        ['fontsize', ['fontsize']],
                        ['color', ['color']],
                        ['para', ['ul', 'ol', 'paragraph']],
                        ['height', ['height']],
                        ['table', ['table']],
                        ['insert', ['link', 'hr']],
                        // ['insert', ['link', 'picture', 'video', 'hr', 'readmore']],
                        ['view', ['fullscreen', 'codeview']]
                        // ['help', ['help']]
                    ],
            cleaner:{
                          action: 'both', // both|button|paste 'button' only cleans via toolbar button, 'paste' only clean when pasting content, both does both options.
                          newline: '<br>', // Summernote's default is to use '<p><br></p>'
                          notStyle: 'position:absolute;top:0;left:0;right:0', // Position of Notification
                          icon: '<i class="note-icon-row-remove"></i>',
                          keepHtml: false, // Remove all Html formats
                          keepOnlyTags: ['<p>', '<br>', '<ul>', '<li>', '<b>', '<strong>','<i>', '<a>'], // If keepHtml is true, remove all tags except these
                          keepClasses: false, // Remove Classes
                          badTags: ['style', 'script', 'applet', 'embed', 'noframes', 'noscript', 'html'], // Remove full tags with contents
                          badAttributes: ['style', 'start'], // Remove attributes from remaining tags
                          limitChars: false, // 0/false|# 0/false disables option
                          limitDisplay: 'both', // text|html|both
                          limitStop: false // true/false
                    },
                callbacks:
                    {
                        onPaste: function (e)
                            {
                                var thisNote = $(this);
                                var updatePastedText = function(someNote)
                                    {
                                        var original = someNote.code();
                                        var cleaned = CleanPastedHTML(original); //this is where to call whatever clean function you want. I have mine in a different file, called CleanPastedHTML.
                                        someNote.code('').html(cleaned); //this sets the displayed content editor to the cleaned pasted code.
                                    };
                                setTimeout(function ()
                                    {
                                        //this kinda sucks, but if you don't do a setTimeout, 
                                        //the function is called before the text is really pasted.
                                        updatePastedText(thisNote);
                                    }, 10);
                            },
                        onChange: function(contents, $editable)
                            {
                                clean_html(this, "b", contents);
                                clean_html(this, "i", contents);
                            }
                    }
        });

任何人都可以让我知道这是什么触发条件吗？