I've never had any issues with it. (At least that I'm aware of - I block lots of stuff by default with uMatrix, so I usually assume breakage is due to that.)

In case you're worried that it'll catch incorrect elements via generic selectors or the like, the list is almost entirely site-specific selectors (see [1]). The (much smaller) list of generic selectors can be found at [2].

[1] https://github.com/yourduskquibbles/webannoyances/blob/maste...

[2] https://github.com/yourduskquibbles/webannoyances/blob/maste...