I've found the reason for the “magazine” widget override and fixed it via FTP. I will include the fix in the upcoming update, so you don't have to worry about it.
The cache automatically deletes after the caching interval only. If you want to delete it when creating a new post, you can add the following code to the functions.php file in your active theme directory (add from line 3):
This will trigger the clear procedure on post update. Make sure to have a copy of everything before making modifications!Best,
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