zhoufanglu commented on issue #14027:
URL: https://github.com/apache/echarts/issues/14027#issuecomment-759219123


   ```js
   var container = document.getElementById('main');
   var chart = echarts.init(container);
   chart.setOption({
     title: {
             text: 'aa',
             left: 'left'
           },
     xAxis: {
       data: ['A', 'B', 'C']
     },
     yAxis: {
       
     },
     series: [{
       type: 'bar',
       data: [120, 200, 150]
     }]
   });
   
   const option = chart.getOption()
   option.title.text = 'b'
   chart.setOption(option)
   
   ```
   我动态修改了title,却没有生效


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