Syntax quirks - uBlockOrigin/uBlock-issues GitHub Wiki
See also: Filter performance
- Filters match on word boundaries unless explicitly wildcarded
- Looking-like-domain filters match only in host part of URL
- Negated domains in cosmetic filters work like exception (In ABP generic blocking filter overrides filter with negated domain).
- One filter can be counted as many, example
-
$documentworks only as blocking filter - Generic cosmetic filters don't work in Shadow DOM
- Popup filters will not close pages opened by direct user action when the page'S URL matches the link clicked
- Domain filter in uBO matches fully qualified domain name (FQDN, these with dot at the end), where in ABP match is exact.
- Simple generic cosmetic filters no longer hide
<body>element after uBO v1.37.3b15