Sometimes when connecting to a network (wired or wireless), the spinner that notifies that connecting is in progress keeps spinning even when connection gets state "connected" (visible in the applet). The only unusual thing is the absence of ip address in the applet popup. Combined with the fact that spinners in the tray are cpu power hogs, this makes it a pretty serious issue. Reproducible: Sometimes Steps to Reproduce: 1. Initiate connection to network 2. wait for connected state 3. See internet working, state as connected and spinner still spinning.
After plasmashell restart, ip is in applet, and spinner is gone.
*** This bug has been marked as a duplicate of bug 352326 ***