[Bug Report] select in filter mode, Option code wraps, resulting in styling errors

[xiaoxmok]

Environment

win10/chrome71/vue2.2.6

Reproduction link

https://run.iviewui.com/Z7jCATEk

Steps to reproduce

select 在filterable模式下，Option代码换行

What is expected?

select 在filterable模式下，Option代码换行，选中值后，select框中前后没有空格

What is actually happening?

select 在filterable模式下，Option代码换行，选中值后，select框中前后有空格，

[iview-bot]

Translation of this issue:

Environment

Win10/chrome71/vue2.2.6

Reproduction link

https://run.iviewui.com/Z7jCATEk

Steps to reproduce

Select in filter mode, Option code line breaks

What is expected?

Select in filter mode, Option code wraps, after selecting the median, there are no spaces in the select box before and after

What is actually happening?

Select in filter mode, Option code line breaks, after selecting the median, there are spaces in the select box before and after.

[iview-bot]

Hello, this issue has been closed because it is not a bug, but a usage problem, please consult other communities.