Unfortunately in modern web uMatrix is just incredibly annoying. Nearly every site breaks for various reasons and often allowing everything in uMatrix still doesn't fix the issue.
Card payments, especially with 3D secure that use iframes, are one of the biggest problems. This often leads to creating new order several times since allowing something + reloading loses the entire flow.
Captchas are also massive pain, probably because they can't fingerprint as well as normally?
Life after having disabled uMatrix completely has been better.
Unfortunately in modern web uMatrix is just incredibly annoying. Nearly every site breaks for various reasons and often allowing everything in uMatrix still doesn't fix the issue.
Card payments, especially with 3D secure that use iframes, are one of the biggest problems. This often leads to creating new order several times since allowing something + reloading loses the entire flow.
Captchas are also massive pain, probably because they can't fingerprint as well as normally?
Life after having disabled uMatrix completely has been better.