Latest SW and Chrome 30.0.1599.69 m no longer stay 'together'

If I minimise / maximise the chrome window from the taskbar, SW used to hide / pop to the top of the window stack. But this no longer works. SW is hide / restoring, but not coming to the top when the Chrome window does. I'm afraid I can't remember when this started - if it was the last SW update or the Chrome update... For info, I don't have the 'Keep sidebar visible' option checked - I never have, but SW used to still come to the top. I'm not sure how / why, but it was great as it didn't cause the focus flickering or Alt-Tab annoyance. Shame it's stopped working though...