Same problem here.
use 4.2.2pl1
if we want to change a user from profile, the sidebar in admincp loaded but user.php not
Code:
Mixed Content: The page at 'https://www.host.tld/admincp/index.php?loc=user.php%3Fdo%3Dedit%26u%3D4412' was loaded over HTTPS, but requested an insecure resource 'http://www.host.tld/admincp/options.php?do=options&dogroup=address&advanced=0'. This request has been blocked; the content must be served over HTTPS.