Custom Website Sidebar doesn't show on Mobile Web Browser

First of all I want to say a BIG THANK to all of you awesome people behind ERPNext. The v8 is such a master piece! However I found this issue:
The Custom Website Sidebar shows perfectly on Desktop web browsers, but not on Mobile web browsers. This issue blocks me from building mobile-first landing pages. Can you please fix this?

Thank you,

Added Portal sidebar does not show up in mobile · Issue #8317 · frappe/erpnext · GitHub

Are you referring to the portal sidebar?

Home page:

Item page:
Press the back button(arrow button[<]) and you can access the side-bar


Yes I know but this is for my web visitors