151702 2015-12-01 02:57:12 -0800 Content Blocker does not apply "css-display-none" rules when page is loaded in non-active tab 2020-02-19 03:31:51 -0800 1 1 1 Unclassified WebKit WebKit Misc. Safari 9 All iOS 9.0 RESOLVED INVALID P2 Normal --- 1 am webkit-unassigned achristensen benjamin krzysztof.modras mjs oldest_to_newest 1145215 0 am 2015-12-01 02:57:12 -0800 Steps to reproduce (tested on ipad mini 2): 1. Register a simple content blocker with one rule (hiding "share" buttons on macrumors.com) [{trigger: {url-filter: ".*", resource-type: ["document"], if-domain: ["*macrumors.com"]}, action: {type: "css-display-none", selector: ".social"}}] 2. Open macrumors.com. Share buttons are hidden http://screencast.com/t/88mfI2UM 3. Tap on the article header and select "Open in New Tab" 4. Wait a bit then switch to that new tab Expected result: Share buttons should be hidden Real result: Share buttons block is visible The block will be hidden if you refresh the page 1612361 1 am 2020-01-29 01:59:53 -0800 The issue is still there. Here's an easier way to reproduce: 1. Register a simple content blocker with one rule (hiding "share" buttons on macrumors.com) [{trigger: {url-filter: ".*", if-domain: ["*iana.org"]}, action: {type: "css-display-none", selector: "body"}}] 2. Open example.org 3. Cmd+Click on the "More information..." link 4. Wait a bit then switch to the IANA tab Expected result: The page content is hidden Actual result: Nothing is hidden, you need to refresh the page for the rules to be applied 1620599 2 mjs 2020-02-19 02:40:30 -0800 Strange that opening in a background tab would have an effect. 1620619 3 am 2020-02-19 03:31:51 -0800 Huh, it seems that this issue is invalid after all. Most likely I've not waited enough for a content blocker to be compiled and applied.