jinghua-qa opened a new issue #13903:
URL: https://github.com/apache/superset/issues/13903
SQL Lab - Expand/Collapse arrow is not working in left sidebar
#### How to reproduce the bug
1. Select a table from SQL Lab
2.Click expand/collapse arrow
### Expected results
On expand/collapse: should show/hide table columns
### Actual results
Expand/Collapse arrow is not doing anything, user need to click on table
name to show/hide table columns
<img width="1622" alt="Screen Shot 2021-03-31 at 4 49 22 PM"
src="https://user-images.githubusercontent.com/81597121/113237806-6095ab00-925c-11eb-9039-7b6ec1d884cc.png";>
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![https://user-images.githubusercontent.com/81597121/113237806-6095ab00-925c-11eb-9039-7b6ec1d884cc.png"](https://user-images.githubusercontent.com/81597121/113237806-6095ab00-925c-11eb-9039-7b6ec1d884cc.png"){kind=link}