That is not a bug, that is normal if you have more than one LUKS device to unlock. If you don’t want to enter the passphrase more than once you need to set up a keyfile.
You have at least two topic where it was mentioned you need to allow access to your HTML canvas data if you want to upload images (this one, and this one). All you have to do is click on the icon in your browser’s address bar and allow canvas access.