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+- Filters match on word boundaries unless explicitly wildcarded - https://github.com/uBlockOrigin/uBlock-issues/issues/954#issuecomment-602041890
+- Looking-like-domain filters match only in domain part of URL - [HOST optimiztion](./Static-filter-syntax#hosts-files)
+- Negated domains in cosmetic filters work like exception (TODO: compare with ABP).
+- One filter can be counted as many, [exmple](./Static-filter-syntax#badfilter)
+- `$document` work only as [blocking filter](./Static-filter-syntax#document-for-entire-page-exception)
+- generic cosmetic filters don't work in Shadow Dom - https://github.com/uBlockOrigin/uBlock-issues/issues/803
+- popup filters will not close pages opened by direct user action - https://github.com/uBlockOrigin/uBlock-issues/issues/774