Font scaling setting doesn't work

Description of the issue:

How can this issue be reproduced?
I don’t know if this us unique to my phone

  1. Load a web page
  2. Go to settings → accessibility
  3. Change font scale to either extreme

Expected result:
The font on the webpage should have changed in size. It doesn’t for me.

Brave Version( check About Brave):
Mobile Device details
Android 10 build/QKQ1.200830.002

Additional Information:
While looking for solutions I found this thread, with the exact same problem as me.

Edit: additional context - my OS is MIUI 12.0.11. I have my phone font size at minimum.