Ever since 2.7.x, I've got a few functions within WordPress that, whenever I use them, they "finish" by dumping me out of the administrative interface and back to my regular URL.
These include adding images/media to a post (the pop-up window says that it wants to navigate away from the page) and the finishing aspects (after it reactivates) of updating a Plug-in.
I've looked at various Plugins as being the cause, but I don't think they are (disabled them one at a time to see if the functionality returned properly).
I'm now at v2.9, and the problem still persists.
Anyone have any suggestions?