googlemaps iframe breaks editor

googlemaps iframe breaks editor

Ok, this only happens in Firefox, don't know why, it's supposed to be more standards compliant:

Go google maps, get any map. Click on "link to this page", select the HTML for the iframe.

Go any page, click on "insert HTML", paste the iframe.
Now, the iframe looks "cut" (doesn't display) properly. Save anyways.

View the page, the map is embedded!!

Edit the page... ...
and then it goes blank and unresponsive. You can't even toggle to HTML mode to see what's going on.

The only thing that you can do from then on, is to trash the page

However, the problem doesn't show up on internet explorer