ie9 浏览器下，树级节点无法正常使用，没有CheckBox，样式也不正常

[longtaow]

无法展示正常的树级节点，请问是哪里需要设置吗？

[close-issue-app]

Your issue has been closed because it does not conform to our issue requirements. Please use the Issue Helper to create an issue, thank you!

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[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.