Please improve navigation trough wikis on mobile. Currently there is no way (while viewing a wiki page) how to go to subpages or the parent page. Add these links and also a breadcrumb navigation. Also links to siblings might be considered.
The only way how how to traverse a wiki structure is to start with the site map and use the arrows “>” on the right - which is not straightforward enough
I believe that this would require only small effort while it brings a huge usability improvement.