Frominor opened a new issue, #20598:
URL: https://github.com/apache/echarts/issues/20598

   ### Version
   
   5.2.2
   
   ### Link to Minimal Reproduction
   
   
https://echarts.apache.org/examples/en/editor.html?code=CYQwLiAEC8kNoChKQN5OZAdiAtgUwC5IByEYgGnWQGNw8BzAewCcBPI4gRmPQF9LkaDFlyESAIwpVItMAxbsS3PgNTTs-DiG6qadJmw4AmHsn7ohGDWNIndM_Qo7Kzqy8msdxO6bPmGSAGZTSHNBdVEOailhPwNFLhDeBABdAG4EPGB6PABnGHgLaVzGAFdmahsyewhmHLAtH2EANxAAG1KxAFZ7OKcSahMVIuES8sqtGIxa-q07aVaOsUDexwDiahdQt2KyiptJGpA6vAaJJoxFzqIADlW5eKih1xGMMf3Jo5Oz4m8p5Cuy3u_gSmySO1Gewm53-kBmp0asMBRE4wMeA2Cw3CkPGBwuyHhP2i9mRkCMaP6Gy2yXSCAQjAADmAAJaMTAFSxtBh4TDAIgoMKQXJ4ZjMvL86RgVgMmy5ECYADWeFYsLaIFYZR-mDZeFhnhIuQVsLwOAZAAsQLlmbl-ZAAGaMailG0kEDAABWIEqmGoKu2dOEoAg9iyOVy9mFXOocmAAFlGMAbDhSm0WQyubDI3ho7a2szMHgAMpSrm26iMNosDjMLLEUL-l7IejMEDm5nUIiIYTuabSmzNsoM2HIUX0M1nABsAAZ7ATGUQZ9IaGbmW1gDXMJ2lxge8ICX3q9mwMO9wAvLnNPBtIgAFlne9yFpltrNeGZY7ORnJkAA7szgGAZpEIE37MEQXQNnuowlmIKD2qu14kAy-ZGpBUEEngAAeYAAMJsnImBnLu6Hnngl6IXe25QbkMG2nI2FRDo9r4YWzKnmInATuQ8FtIhvxqtQqHJOhGCCiJ9G4WydrvraDKMFaLJshw-ZWomdZiehbLUHmglEHapQ-op7IABQMgAlGoInCG0CoFHAtJWRgoZ5AAdA6zAAKJemaxnGZh3HMhZ0AAHyWY5GDMnakB-S5fRsDA0CwFSxAWTZ
 
LkMs6PmBRk4WhGZOXhTgrA4RazBgC5wDWgy4DUGaACC0aspgxnEeJB4kGAjD0PQXKFleR4niJQYgAAkryWFEDZ95DeAIAACrtcQzkhI5vD5VRokbcJe4pNI227bwaRAA
   
   ### Steps to Reproduce
   
    data = [
     { name: 'a', category: 'Category 1' },
     { name: 'b', category: 'Category 1' },
     { name: 'a1', category: 'Category 2' },
     { name: 'a2', category: 'Category 1' },
     { name: 'b1', category: 'Category 3' },
     { name: 'c', category: 'Category 1' },
   ];
   
    edges = [
     { source: 'a', target: 'a1', value: 5 },
     { source: 'a', target: 'a2', value: 3 },
     { source: 'b', target: 'b1', value: 8 },
     { source: 'a', target: 'b1', value: 3 },
     { source: 'b1', target: 'a1', value: 1 },
     { source: 'b1', target: 'c', value: 2 },
   ];
   
    option = {
     tooltip: {
       trigger: 'item',
       triggerOn: 'mousemove',
     },
     legend: {
       show: true,
       data: ['Category 1', 'Category 2', 'Category 3'],
       selectedMode: 'multiple', 
       top: 'top',
     },
     series: [
       {
         type: 'sankey',
         layout: 'none',
         data: data,
         links: edges,
         categories: [
           { name: 'Категория 1', itemStyle: { color: '#5470c6' } },
           { name: 'Категория 2', itemStyle: { color: '#91cc75' } },
           { name: 'Категория 3', itemStyle: { color: '#fac858' } },
         ],
         emphasis: { focus: 'adjacency' },
       },
     ],
   };
   
   ### Current Behavior
   
   I am using a Sankey diagram. I need to be able to customize the legend so 
that when clicked, the steps associated with it will disappear
   
   ### Expected Behavior
   
   the legend must show
   
   
   ### Environment
   
   ```markdown
   - OS:
   - Browser:
   - Framework:
   ```
   
   
   ### Any additional comments?
   
   _No response_


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