helgasoft

@kateEcobb, did you try already [useCoarsePointer](https://echarts.apache.org/handbook/en/how-to/interaction/coarse-pointer/) ? If yes, please post in #15080.

Agree, renderMode 'richText' is misleading since there is no _rich_ in tooltip API. Technically we cannot call it a bug since _rich_ is missing, but I think _rich_ was **meant...

bug confirmed - entire series line segments are not restored after emphasis blur. Only their symbols remain. Tried with ```blurScope: 'coordinateSystem'```, but result is the same. Another workaround to try...

yes, dataset shows the same - [Demo](https://echarts.apache.org/examples/en/editor.html?code=PTAEHMFMDtIJwIYBdKiQSwLaoCbIQLABQAZgK7QDGGA9tKHigM4CS0ASgtFABRNII4SACLJIAGlAwcolAEpQAb2KhQlOvwb5QAXlABtALoBuFaHQlQPdEwByCWzwAOgppDZIe02ZDl-lZqokNHBWjKh6_IIiYsZaKKAAPHresfGQAHRuMSg84RlQOZA8CgDUoACM_spEqnXxCBlOZEwAFjz6sADuoD55YnKSALLIrRmI0Dg0mCWgAFSVAAyLhnKmtXUAvmabUgA2bgEbqnuQSGpkcHAwRbqgUUI-6_XBodZ3i3HoSSmTT-alUoKGr1VSMRrNNodQKg7q9MQ8SiXa7QIpyDJIGgsADKAHlsUg4OhuCUsnt0JRiotxBVFoMYfURkgxhMpjMFAtadSGXUmSyuGzZpzlqBylzxDzVHzxgLpkKlotRaAAEzLCXHUHS1lyjkKpUAZjVktAWtl7PmevKABYjRrGaMZZMdRauUqAKy20G8h3a83CxXlABsyx5q2eoKRVxuPiyZz6kZRRQKcYRZUqaxh2w2WdU1yQl3o4PWWZAeAAnuTNHpwqwOFxeHC-gByVXK5UAWkWFXbFQAnE3BqBGwiW4s2539T3-351uXK-dq2Ja5xuMVh7lR-Ou1OB5IAOwejNEYhuOBMO76DJXgCCVwQZZ4e_RAGtIGWmCVDBlMAgnDwrOgCg6AAfEcuZnAWYF1EgZZOJAABcoBNuSsBNpI0AINgiHIU2pToJIbQ0F02JlpgABGNB7IhhJkBIMKQJgTitAgTA2IhiigMESJMNhbh7CQaGgGReyXNi6hwdh4B7DQZEIHsTagJs6r1CAhFdNeex7CR5GUYhJByW4kggHclBiOAIRlqAdB7GWMIgOo0CwNQthkJpPE0XRGowOoOAIUooAAB7YQFgllrx8DoJATAAPoKeU3w5opxZHsQNBOLQ9B6CCoBcFgyDoHQekGRIoCnFAkzwRxfGQNQkA4JVyEVE28EebsSlmAF14BWx_kwRJSEYNggkwgg3VMAAMggZGQFRUH1AAWq8P5ICgcDYYoZabWWmztooQxDDtig4DgmzDXaoBwDQAgoPBVpum1ymgGWXU9Yo7UbCAmKURgTjsfcrREdRcC0ZIS3IKt8FNooZGnYpj3gtk7EwjgWAwKxGiIfoPIcRhWFISFkh9X5TaDZATbvV6TanpFMWLGhPJUxFUXRU1j31IzRLM8q9PnRzNPRfqPOU9TzNWkLoJ88zbri-zIsxYGMt1JLMV7k2MKGGz9w0JclKIXONhIDsj1y4hp5MMQmxAA) Hovering series (entering/exiting from either side) will gradually remove all lines. Disabling symbols ```showSymbol:false``` may help a little. Any refresh, like resize or...

> I tried with `select` but according to this issue it doesn't work (#16545) and will never work. good that you mentioned it! See my Demo Code in related #19194....

I believe the best workaround is with toggle _click_ event - [Demo](https://echarts.apache.org/examples/en/editor.html?code=PTAEHMFMDtIJwIYBdKiQSwLaoCbIQLABQAZgK7QDGGA9tKHigM4CS0ASgtFABRNII4SACLJIAGlAwcolAEpQAb2KhQlOvwb5QAXlABtALoBuFaHQlQPdEwByCWzwAOgppDZIe02ZDl-lZqokNHBWjKh6_IIiYsZaKKAAPHresfGQAHRuMSg84RlQOZA8CgDUoACM_spEqnXxCBlOZEwAFjz6sADuoD55YnKSALLIrRmI0Dg0mCWgAFSVAAyLhnKmtXUAvmabUgA2bgEbqnuQSGpkcHAwRbqgUUI-6_XBodZ3i3HoSSmTT-alUoKGr1VSMRrNNodQKg7q9MQ8SiXa7QIpyDJIGgsADKAHlsUg4OhuCUsnt0JRiotxBVFoMYfURkgxhMpjMFAtadSGXUmSyuGzZpzlqBylzxDzVHzxgLpkKlotRaAAEzLCXHUHS1lyjkKpUAZjVktAWtl7PmevKABYjRrGaMZZMdRauUqAKy20G8h3a83CxXlABsyx5q2eoKRVxuPiyZz6kZRRQKcYRZUqaxh2w2WdU1yQl3o4PWWbwAE9yZo9OFWBwuLw4X0AOSq5XKgC0iwqbYqAE5G4NQAB2D0ZojENxwJh3fQZWcAQSuCFLPEH6IA1pBS0wSoYMpgEE4eFZ0AodAA-I65s4Fy91JClpyQABcoEb5Ngjck0AQ2Bfb8bpToJIbQ0F02KlpgABGNB7C-hJkBIMIgJAmBOK0CBMDYL6KKAwRIkwf5uHsJCfqAkF7Jc2LqI-f7gHsNCQQgeyNqAmzqvUhLoOAUBwAAMsSkAAKIAG43HBcAIexdREZA1CQDgQw0Dgz6vhO6CQEwn4wjA6jKdhoAAB5_gZpGloR8DqUwAD6LHlN8OascWo7EDQTi0PQeggqAXBYMg6B0C-JBMW4khmKcUCTE-OEyXJOBRW-FSNk-8GQLsbFmAZc4GVhShoA-KmNhg2CkQg2VMLxCCQZAsG5XANACCgT5Wm6aVSaWWU5Yo6UbCAmIwRgTj6SBXTiZJuEhPuSAoHAT6NookGbCx3Vgvg2TYTCOBYDAmEaC--g8jh36_q-JmSPeNGvkVkCNstoKNmpGlWYsWl2qpFmPYlUn1Pd73WcqL1ej9RKPfqAN3Q91lWmD30Q1ZbrQ3UQOWVZgYI6oSOPYOjYwoYX33DQlyUi-ZYVkgOxSRDL4TkwUnggAWjQ0zYdIT4elmWbjsSdzQGQex7OsmClgAwuhQgZHQPCNpQ5KUGupHOKeF44WYwmCKArnuVOeiCyL0TJkguJuf50AlOGFhWJh0AAIQ6DzfPAnUIDXNkMIa8bTCxsDHuvIJCCUO0FtyOet71B776QAS5aQJ5rl--g94vhUmzhqHGTxyhkenDHLiUPHZmVMnmagKOofEnodv8zs-yHF5qggJbdxOLGpyxfoKye5ZbDKQZcQgD9LdIP7dbydjGoN3oTcQ13kA93XYDSxSa4wq8VinOc3x6G7GgdxpGSnNwzKgG2lRfKAZ56J85htm2wI8ub7w6I_9zErfr2qFv0AexD-joLu4eZxEXKsdc4J0qI5Hkuxqo12NB_L-v0f5_wEgAu4OFgF5xfIsDI-pwFv3Vkbbe39f5pxQJgZBnk8Fx1AZg7BhdXoOVUA5ByOtRZIFjAbfBJtYGjk2GsIAA). Event _selectchanged_ works only with line symbols, but not line segments - maybe a valid **new Feature** request....

> Do you intend to fix this bug at some point? Cannot speak for the developers, but suspect they have bigger fish to fry. Performance bugs could be hard or...

could be hacked with one additional (invisible) series - [Demo](https://codepen.io/helgasoft/pen/VwOdWyN?editors=0010). Only the tooltip needs to be customized to exclude the additional series. 

can confirm 

did you try ```triggerEmphasis:false``` ?