Ad notifications not being counted

ads-bug
#1
Brave Browser 73.0.63.26 dev
DISTRIB_DESCRIPTION="Ubuntu 18.04.2 LTS"

I’ve been getting (and clicking on) plenty of ad notifications to play with the feature, but the “Ad notifications received” counter doesn’t budge past zero.

Note how my “Ad notifications received” counter is at 0, and that ads are working (there’s one in the bottom right):