$elemhide cannot be disabled via a counter filter flag

[ghost]

Describe the issue

$elemhide and $generichide flags cannot be disabled via a counter filter flag like $important.

One or more specific URLs where the issue occurs

https://www.google.com/

Screenshot in which the issue can be seen

https://i.gyazo.com/d297a2081c872cb5b028904df9c2ebb7.png

Steps for anyone to reproduce the issue

1. Go to google.com.

2. Open uBlock Dashboard and add these filters - @@||google.com^$elemhide and ||google.com^$elemhide,important.

3. Go back to google.com tab page, open the logger and refresh the page.

4. The $elemhide filter flag is still being applied even though a counter filter is present.

Your settings

• Default
• Browser/version: Chromium 54
• uBlock Origin version: 1.9.16

Your filter lists

Default

Your custom filters (if any)

@@||google.com^$elemhide + ||google.com^$elemhide,important + ||$websocket