The window disappears before login information can be input on some wifi networks

Been having a problem with one network where the captive portal manager will open a login window and on the redirect will suddenly close. It might be a peculiarity on this wifi network as it does not occur on others.

I did not have the same problem on freya and has only occurred since I upgraded to loki.

Launchpad Details: [#LP1631664](https://bugs.launchpad.net/bugs/1631664) Jam - 2016-10-08 22:27:40 +0000