OK, Thanks for the explanation, and sorry for the problem.
I haven't noticed this option before, because Wordpres SSO plugin I'm using hid it and it is not present in the ACP. In case of emergency I will try to disable this plugin for a moment (risking that SSO for someone won't work) just to see someone's followed content, but anyways it would be nice to see followed content of each particular user directly in ACP, without the need to log in as another user.