[Bug] Chart background color opacity is not respected in SaveAsImage functionality when renderer is of type canvas

[MNHarshitha]

Version

5.3.0

Link to Minimal Reproduction

https://codepen.io/Harshitha19/pen/oNqLqKe

Steps to Reproduce

1. Open the sample, and click on the download icon present in the toolbox of the chart.
   
2. Open the downloaded image and observe that the background color of the chart is black.
   

Observation:
Opacity is not respected in the saveAsImage functionality when the renderer is of type canvas.

Current Behavior

Opacity is not respected in the saveAsImage functionality when the renderer is of type canvas

Expected Behavior

Background color along with opacity is expected to be respected in the captured screenshot.

Environment

- OS:
- Browser:
- Framework:

Any additional comments?

No response

[plainheart]

It seems your photo viewer has a black background, please try to use a viewer with a white background.

[echarts-bot]

This issue is closed due to not being active. Please feel free to open it again (for the author) or create a new one and reference this (for others) if you have further questions.