4.4.0 user registration page anomaly

-- HikaShop version -- : 4.4.0
-- Joomla version -- : 3.9.21
-- PHP version -- : 7.3.22

Hi,

I'm in the process of updating an old abandoned 2.6.3 Starter store to 4.4.0 Business. All going well so far, except for the user registration. I can't get the login or switcher to display.

"HikaShop user synchronization plugin" is enabled with ID of HikaShop registration menu item.

Screenshots of both, login & registration settings and the page with these exact settings -- in Protostar (no overrides).

I've been through the config table to see if there's anything funky left over from 2.6.3 days, but couldn't find anything. A hint on where else to look would be appreciated - many thanks!

In other news, just by the way:
Due to

@media (min-width: 576px) {
.hkform-horizontal .hkcontrol-label {
    text-align: right;
    margin-bottom: 0;
    padding-top: 7px;
}
}

Hi Nicolas,

Yes, of course the login view is part of the checkout workflow. However, this is about the registration page as mentioned, not the checkout. In checkout it's all working fine.

No, no JS errors, no CSS hiding stuff.

Ok, next I'll be sending you access info via your contact form, incl Super User account credentials.

lousyfool wrote: ... In checkout it's all working fine.

nicolas wrote: There is no switcher mechanism on the registration page itself. (...) As the name implies, it's only for registration.