Was working great, then... – Umbra - Ad Blocker for Safari Browser, Best Free Content & Ads Block Extension Review

... it seems to have stopped working. It isn't hurting anything, but it's also not blocking ads. I went to one of my own sites where I serve ads (ironic, I know), and I saw my own simple ad, so I know it's not working properly. Timing suggests it's related to the latest release. I installed a competitor's blocker and enabled it. I then refreshed my site in Safari, and the ad on my site was blocked, as expected.
Review by neun.elf on Umbra - Ad Blocker for Safari Browser, Best Free Content & Ads Block Extension.