Hierarchy wiki pages display

Hi,

I’m new to Gitlab wiki. I can create hierarchy wiki without any issue, such as “Engineering/foo.page”, “Engineering/Hardware/bar.page”, and so on. The problem is that I can’t display them in hierarchy way. Many of 2nd level directories are listed as same as top level, for example,

Engineering
<4 white spaces> foo.page
Engineering/Hardware
<4 white spaces> bar.page.

Ideally it shall be hierarchy,
Engineering
<4 white spaces>foo.page
<4 white spaces> Hardware
<4 white spaces> <4 white spaces> bar.page

It’s also important to make each level directory collapsable to hide/show its sub-level contents.

Can we do it on GitLab now?

thanks,

Steve