1.
或者标签崩溃问题
解决方法 HTMLElemen类中

var words = this._getWords();
            if (words == null && (!this._children || this._children.length == 0))
                return false;
            if (words) {
                for (var i = 0, n = words.length; i < n; i++) {
                    out.push(words[i]);
                }
            }
            if (this._children)
                this._children.forEach(function (o, index, array) {
                    var _style = o._style;
                    if(_style)
                    {
                      _style._enableLayout && _style._enableLayout() && o._addToLayout(out);
                    }
                    else
                    {
                      o._addToLayout &&  o._addToLayout(out);
                    }
                });
            return true;
        }

添加了

if(_style)
                    {
                      _style._enableLayout && _style._enableLayout() && o._addToLayout(out);
                    }
                    else
                    {
                      o._addToLayout &&  o._addToLayout(out);
                    } 这个保护

2.富文本超链接无法换行 workLines中索引i没有初始化为0

 workLines(wordList, g, recList) {
            var cssStyle = this.style;
            var hasLine;
            hasLine = cssStyle.textDecoration != "none";
            var i = 0, len;
            len = wordList.length;
            var tStartWord;
            tStartWord = wordList[i];
            var tEndWord;
            tEndWord = tStartWord;
            if (!tStartWord)
                return;
            var tword;
            for (i = 1; i < len; i++) {
                tword = wordList[i];
                if (tword.y != tStartWord.y) {
                    this.createOneLine(tStartWord, tEndWord, hasLine, g, recList);
                    tStartWord = tword;
                    tEndWord = tword;
                }
                else {
                    tEndWord = tword;
                }
            }
            this.createOneLine(tStartWord, tEndWord, hasLine, g, recList);
        }

3. 超链接的区域无法支持鼠标事件的mouseover和 mouseout 因此可以扩展一下
第一步修改此类：

class HTMLHitRect {
        constructor() {
            this.rec = new Laya.Rectangle();
            this.isMouseOver = false;
            this.reset();
        }
        reset() {
            this.rec.reset();
            this.href = null;
            this.isMouseOver = false;
            return this;
        }

        getIsMouseOver()
        {
            return this.isMouseOver;
        }

        setIsMouseOver(val)
        {
            this.isMouseOver = val;
        }

        recover() {
            Laya.Pool.recover("HTMLHitRect", this.reset());
        }
        static create() {
            return Laya.Pool.getItemByClass("HTMLHitRect", HTMLHitRect);
        }
    }

第二步 class HTMLDivElement 构造中监听一下

            this.on(Laya.Event.MOUSE_OVER, this, this._onMouseOver);
            this.on(Laya.Event.MOUSE_OUT, this, this._onMouseOut);
            this.on(Laya.Event.MOUSE_MOVE, this, this._onMouseMove);

增加如下3个方法

        _onMouseOver()
        {
            var tX = this.mouseX;
            var tY = this.mouseY;
            var i, len;
            var tHit;
            len = this._recList.length;
            for (i = 0; i < len; i++) {
                tHit = this._recList[i];
                if (tHit.rec.contains(tX, tY)) {
                    tHit.setIsMouseOver(true);
                    this.event("HREF_MOUSE_OVER", [tHit.href]);
                }
            }
        }

        _onMouseMove()
        {
            var tX = this.mouseX;
            var tY = this.mouseY;
            var i, len;
            var tHit;
            len = this._recList.length;
            for (i = 0; i < len; i++) {
                tHit = this._recList[i];
                if (tHit.rec.contains(tX, tY)) {
                    if(!tHit.getIsMouseOver())
                    {
                        tHit.setIsMouseOver(true);
                        this.event("HREF_MOUSE_OVER", [tHit.href]);
                    }
                }
                else
                {
                    if(tHit.getIsMouseOver())
                    {
                        tHit.setIsMouseOver(false);
                        this.event("HREF_MOUSE_OUT", [tHit.href]);
                    }
                }
            }
        }


        _onMouseOut()
        {
            var tX = this.mouseX;
            var tY = this.mouseY;
            var i, len;
            var tHit;
            len = this._recList.length;
            for (i = 0; i < len; i++) {
                tHit = this._recList[i];
                if (tHit.getIsMouseOver() && !tHit.rec.contains(tX, tY)) {
                    tHit.setIsMouseOver(false);
                    this.event("HREF_MOUSE_OUT", [tHit.href]);
                }
            }
        }