Login link destination URL parameter doesn't work if site installed in sub directory

For example /subsite/user/login?destination=/subsite/admin/content works if you are already logged in but if you are not logged in and click a social auth login link, then you are redirected to /subsite/subsite/admin/content.

Tried also with destination=/admin/content (works only with social auth login link) and destination=admin/content (works only if you are already logged in).

Tested with social_auth 3.1.0 and social_auth_google 3.0.0 using the block "Social Auth Login".