'Exclude this site' not working



Description of the issue:
On the Rewards page ( chrome://rewards/ ) some of the sites cannot be excluded by clicking x on the right of the percentage which has a tooltip “Exclude this site”

Steps to Reproduce (add as many as necessary): 1. 2. 3.
I could exclude many of the sites but I could not do some of them which don’t have any common thing for me. It looks very random

Actual Result (gifs and screenshots are welcome!):
Nothing happens

Expected result:
Exclude the site

Reproduces how often:
Happened like %20 of all

Brave Version(about:brave):
Version 0.55.22 Chromium: 70.0.3538.77 (Official Build) (64-bit)

Reproducible on current live release (yes/no):

Additional Information:
using mac os x 10.12.6


Hi @yazar,

Please see Cannot exclude website from Brave rewards