1) Open a password-protected zip file
The contents are visible
2) Attempt to copy files out of the zip file into a folder
A password dialog appears, with the busy cursor spinning.
3) Attempt to click on for example "Show password"
The busy cursor will continue to spin. The only way to navigate the password dialog is via the keyboard. Once you realize this everything works perfectly.
If you don't realize you need to use the keyboard, no amount of clicking will get you out of the dialog. You're forced to kill the process and start over.
7-Zip 9.2 64-bit
Windows 7 Home Premium 64-bit
Intel Core 2 Duo