The goal is to have two independent google maps each in a jQuery Tab. This will be included in a IFrame. When bounds_changed is triggered the lat/lng and zoom should be stored in a cookie. If there is a cookie available then the map should be positioned and zoomed regarding on the data of the cookie.
It seems to work with the common browsers except an actual Internet Explorer. IE does not "refresh" the map on the second tab.
Here's the JSFiddle with the "inner" stuff: http://jsfiddle.net/metaxos/AmVtf/5/
Here's the JSFiddle with the IFrame: http://jsfiddle.net/metaxos/x6SxB/3/
<iframe width="600px" height="600px" src="http://jsfiddle.net/metaxos/AmVtf/5/embedded/result/" allowfullscreen="allowfullscreen" frameborder="0"></iframe>
Now this was an odd one. Been playing with it and can replicate your issue in ie10, and everything seems perfectly fine.
Just stumbled across this question however: https://stackoverflow.com/a/15930571/1856970 and it seems it's a bug with ie that stops cookies being set if you have an underscore in your machine name.... Very odd.
Try testing on another machine if you have one available.
Also see this which may be relevant:
Changing my privacy settings as advised above allows this to work with the iFrame version.