Nicobaby opened a new issue #2429: [Feature]When the workflow goes online, the canvas cannot be edited at this time, but you can still see the Save button in the upper right corner URL: https://github.com/apache/incubator-dolphinscheduler/issues/2429 When the workflow is online, click the workflow to enter the canvas page. The canvas cannot be edited at this time, but you can still see the Save button in the upper right corner. When you click the Save button, the page will display an error prompt. You should change the Save button to the close button or remove it 
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