[GitHub] [echarts] jamesleekko opened a new issue #15467: 折线图在数据都为0的情况下，设置shadowOffset或shadowBlur会导致折线不显示

[GitBox]

jamesleekko opened a new issue #15467:
URL: https://github.com/apache/echarts/issues/15467


   ### Version
   5.1.2
   
   ### Steps to reproduce
   1.正常设置折线图
   2.折线图数据value值都为0
   3.series中给lineStyle设置shadowoffset或shadowblue
   
   ### What is expected?
   线条正常在底部显示
   
   ### What is actually happening?
   线条不显示
   
   <!-- This issue is generated by echarts-issue-helper. DO NOT REMOVE -->
   
   <img width="326" alt="ED4FAD1E-76A9-4D1E-BB22-E8353257DC62" 
src="https://user-images.githubusercontent.com/26496074/127993599-bcff57af-5ee3-4160-a2ca-4974828d8c68.png";>
   <img width="1053" alt="B2578C80-C600-4F06-B8DB-E1C6E0B34CB5" 
src="https://user-images.githubusercontent.com/26496074/127993610-3e0b5d01-e1af-4e35-ace7-c3e88f3a1729.png";>
   <img width="329" alt="6E41FA9D-8B1B-4EA9-93DE-B63EC6DDEF6D" 
src="https://user-images.githubusercontent.com/26496074/127993630-2ba0bbef-8f42-4ccd-a05f-0e20aa45d87f.png";>
   
![019D2E9B-18B2-4BF3-A0F7-AF9C8D9A20ED](https://user-images.githubusercontent.com/26496074/127993750-8a99b305-97e3-44ed-88d7-245384c5e61f.png)
   
   
   
   


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