Using Fedora 22 with an X1 Atom, I have had frequent GNOME Shell clashes on wake-up from a locked screen, when using a docking station. This causes several issues. This one is that when I try to re-connect to my employer's VPN (Red Hat, uses 2 factor auth), instead of seeing the expected VPN password dialogm the network status in the Shell menubar shows the message "authentication required..." but no password dialog appears on the screen. It seems like that the modal dialog for the password "appears" somewhere else.
This seems like a gnome-shell applet issue that should show password dialog. Can you connect from gnome-control-center's network panel? Would you attach a screenshot and/or logs?
Fedora 22 changed to end-of-life (EOL) status on 2016-07-19. Fedora 22 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.