Not working

add the short codes:

[column-group]
[column]This is my first column[/column]
[column]This is my second column[/column]
[/column-group]

This is the results on my page:

This is my first column
This is my second column

Should it be like this? :

This is my first column This is my second column

https://ww.wp.xz.cn/plugins/columns/