HomePageHooks in the GrowthExtension reuses the talk_on_top feature to show link to the "My homepage" page. To make it happen the SkinOptions::OPTIONS_TALK_AT_TOP and SkinOptions::OPTIONS_TABS_ON_SPECIALS has to be set. Sadly, because of some reason, HomepageHooks also enables the OPTION_AMC, which enables the Advanced Mobile Contributions mode on mobile.
The SkinOptions::OPTION_AMC should not be enabled, as it additionally enables new features like UserMenu (visible UI changes).
Referenced code: HomepageHooks::onSkinMinervaOptionsInit()