every single widget area configuration that was not registered in the second theme was lost
Right, becasue it wasn’t registered. Not a bug.
Just like if you have a theme with two sidebars and switch to a theme with one, the second sidebar widgets will be removed.
If they are all one-sdiebar themes, and themeauthor1 calls the sidebar Sidebar and themeauthor2 calls it WidgetArea1, then yes – wordpress will see these differently.
Thread Starter
wjm
(@wjm)
sorry if i didn´t express clear enough:
every single widget area configuration that was not registered in the second theme was lost when i switched back to the first one