I will reply to my own question: plugins uploaded manually do not fetch their dependencies.
-- You received this message because you are subscribed to the Google Groups "Jenkins Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to jenkinsci-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/jenkinsci-users/df21f24c-0f95-4d72-9d54-40a7527aed3e%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.