When using the Donation Form - Mini the 'Complete Payment' button doesn't do anything.
We are currently evaluating this issue and will update this article when we have more information. In the meantime the Donation Form - Mini can be used on a page without a Profile Display part or the Profile Display part can be cut off the page with the Donation Form - Mini.
Steps to Duplicate
Select an amount.
Click Donate Now
Fill in payment information
Click Complete Payment
Observe the button turns grey, briefly says 'Processing Payment' but nothing happens.