Apparently(?) uBlock Origin updated to version 1.18.4 changing it's UI. Until recently uBlock Origin showed groups of various types trackers, ads, etc. vertically down the right side in yellow. I could simply click to the right of a tracker creating a red box with and "X" to indicate that the tracker was blocked. Also, to the right of the various types trackers, ads, etc was an up side down "v" that I could click to open a drop-down list of all trackers in that particular group, that I could select to block or unblock. I've found what seem to be some instructions at https://github.com/gorhill/uBlock/wiki/Blocking-mode:-medium-mode but it's all Greek to me. Sorry, I don't have an image of the UI I am used to, but here's is an image of the current UI that that's got me confused. https://cloud.githubusercontent.com/assets/585534/9021740/41eac000-3821-11e5-9842-c4c6fea573c3.png I'm using FF 65.0.1 (64-bit) on Windows 10.