选择器隐藏下拉框时，不能按回车键添加

[CLJLewis]

• I have searched the issues of this repository and believe that this is not a duplicate.

Version

undefined

Environment

系统： win10，谷歌浏览器，vue: 2.15.17

Reproduction link

https://hrugo.csb.app/

Steps to reproduce

选择器有标签展示，因为需求不需要下拉框，所以设置:open='false'，输入文本后，按 回车键 应该能正常添加， 现在设置后，不能正常添加

What is expected?

无下拉框， 按 回车键 能正常添加文本

What is actually happening?

在无下拉框情况下， 按 回车键 不能添加文本

[tangjinzhou]

你这种需求 建议通过css 隐藏弹窗 而不是通过 open false

[github-actions]

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