Cosmetic filters containing pseudo-elements like ::before and ::after are ignored

[Blutgang]

Describe the issue

Filters containing pseudo-elements like ::before and ::after are ignored. (Last working version - uBlock Origin 1.9.6)

One or more specific URLs where the issue occurs

1. https://www.reddit.com/r/hockey/comments/5yp1cc/nhl_to_permanently_retire_no_66_in_honor_of_josh/
2. https://www.reddit.com/r/The_Donald/

Steps for anyone to reproduce the issue

1. Add custom filter: reddit.com##.arrow.down.login-required.access-required::after
2. Visit the first URL above
3. Hover over the downvote arrow

Expected result: "Please do not downvote based on team fandom or because you don't agree." hover should be hidden.

---

1. Add custom filter: reddit.com###header-bottom-left::before:style(animation: none !important; -moz-animation: none !important; -webkit-animation: none !important; o-animation: none !important; ms-animation: none !important;)
2. Visit the second URL above
3. The banner/header displays an animation

Expected result: The banner animation should be disabled.

Your settings

• Browser/version: Firefox 52.0
• uBlock Origin version: 1.11.2

Your filter lists

Default filter lists

Your custom filters (if any)

reddit.com##.arrow.down.login-required.access-required::after
reddit.com###header-bottom-left::before:style(animation: none !important; -moz-animation: none !important; -webkit-animation: none !important; o-animation: none !important; ms-animation: none !important;)