www/chromium: 19.0.1084.56 page doesn't change when tabs switch

[Yuri]

I sometimes find chromium in the state when page doesn't switch when I 
click on some tab.
So tab switches, window title switches, but actual content of the page 
stays from the previous tab.
This tends to happen on pages with flash content, like youtube.com.
Chromium becomes unusable until after restart.

I am not sure if this is FreeBSD specific or generic.

Yuri