qtip2在Webkit浏览器上显示问题

Question

我使用qtip2库来渲染工具提示，最近我一直遇到工具提示在Webkit浏览器上无法正常显示的问题。 Firefox工作得很好。

这里有一些示例代码：

            // Make sure to only match links to wikipedia with a rel tag
        $j('[role*="user-tooltip"][uid]').each(function()
        {
            // We make use of the .each() loop to gain access to each element via the "this" keyword...
            $j(this).qtip(
            {
                content: {
                    // Set the text to an image HTML string with the correct src URL to the loading image you want to use
                    text: '<div class="nexus-toolbar-spinner"></div>',
                    ajax: {
                        url: contextPath+'/users/profile-short.jsp', // Use the rel attribute of each element for the url to load
                        type: 'GET', // POST or GET
                        data: {targetUser: $j(this).attr('uid') }, // Data to pass along with your request
                        success: function(data, status) {

                            // Set the content manually (required!)
                            this.set('content.text', data);

                            //FB.XFBML.Host.refresh();

                            FB.XFBML.parse();

                        }
                    }

                },
                position: {
                    my: 'bottom center', // Position the tooltip above the link
                    at: 'top center',
                    viewport: $j(window), // Keep the tooltip on-screen at all times
                    effect: false, // Disable positioning animation
                    target: $j(this),
                    adjust: {
                        method: 'shift'
                    }

                },
                show: {
                    event: 'mouseover',
                    solo: true // Only show one tooltip at a time
                },
                hide: {
                      fixed: true,
                      delay: 500
                 },
                style: {
                    classes: 'ui-tooltip-wiki qtip-light qtip-shadow'
                }
            })
        });

在Firefox上，这会在正在悬停的项目下方显示工具提示。但是，在Chrome和Safari上，工具提示有时会一直显示在页面底部，甚至可以延伸到页面底部。