Browser fails to properly display MitID authentication

Description of the issue:
Brave does not properly display the MitID “fortsæt” (continue) button in Brave Browser, neither on Windows 10 Pro or Android, but works fine in DuckDuckGo (Android) and Firefox (Windows Pro).
This is a government system used here in Denmark to authenticate, for example, that the person conducting a transaction with a Danish credit card online is also the owner of said credit card.
Several different online shopping sites use this method of authentication at checkout, but it isn’t specified which ones do, so this bug is hard to reproduce unless you, as a Danish citizen, shop online very often.
If anyone Danish has experienced the same problem, hopefully you can verify this as well.

Steps to Reproduce:

  1. Launch Brave, desktop or mobile
  2. Visit any of the Danish websites that use MitID authentication, then proceed to the checkout on any item you’d like to purchase
  3. During the last step of the transaction, attempt to authenticate your purchase with MitID

Actual Result:
The “fortsæt” button used to authenticate your purchase, will be cut off, making it impossible to complete the transaction.

Expected Result:
The “fortsæt” button should be displayed properly, enabling the transaction to be completed.

Reproduces how often:
Always, with tested exceptions for DuckDuckGo (Android) and Firefox (Windows 10 Pro).
I only have screenshots of Brave Android and DuckDuckGo Android.

Brave Version:
Version 1.67.123 Chromium: 126.0.6478.126 (Official Build) (64-bit)

Reproducible on current live release:
Yes, but you have to be a Danish citizen to even register for use of MitID in the first place.