I get the prompt "Are you sure you want to navigate away from this page? Press OK to continue or Cancel to stay on the current page." when trying to create a new table.
Go to the interface to create a table structure (The easiest way is to create a new database then select that database from the navigation pan. In the "Create table" dialog enter a table name and 1 column, then click Go. The resulting page asks for Name, Type, Length/Values, etc).
Enter some data.
* Press Save.
The table is created as expected either way, but the prompt is shown and should not be.
It appears as if the problem begins with 4b8574aa4a5945c1ca5685592e4889d808b0299a.