I am using Windows 10 on a HP Spectre and use Brave v. 0.18.36
When purchasing a ticket through an online ticket provider, I submitted my payment information, and received an error stating that payment authentication could not occur. Upon repeating the same process in Chrome, I discovered that the in-line Visa certification widget had popped up and was connecting with my Chase accout to validate the payment. My assumption is that Brave was not compatible with this payment validation widget through Visa and it crashed the transaction.
I do not have an immediate need for a fix, but I wanted to post as this will invariably occur for other users. Thanks!