>>> My Info: Win7_64, Nightly 49, 32bit, ID 20160526082509 STR_1: 1. Open url [1] 2. Click on the button "Busy" 3. In less than 10 seconds click on identity block -> ">" -> "More Information" 4. Wait 10 seconds AR: Step 3 - Page info doesn't display any info like "Have I visited this website prior to today?" Step 4 - Page info finally shows all information at once ER: Step 3 - Page info should display all information known to parent process immediately (Note 1) Step 4 - Page info should show remaining information STR_2: 1. Open http://www.rp-online.de/ 2. Execute in console code [2] 3. In less than 10 seconds click on identity block -> ">" -> "More Information" 4. Wait 10 seconds > [1] data:text/html,<title>Ready</title><script>function Busy(){document.title=Date.now()+" "+"Busy";setTimeout(function(){var D=Date.now()+(+I.value);while(Date.now()<D){}document.title=Date.now()+" "+"Ready";},10)}</script><button id="B" onclick="Busy()">Busy</button><br>Timeout: <input id="I" value="10000"> milliseconds > [2] function Busy(){ document.title=Date.now()+" "+"Busy"; setTimeout(function(){ var D=Date.now()+10000; while(Date.now()<D){} document.title=Date.now()+" "+"Ready"; },10) }; Busy(); Notes: 1) In this bug report reporter assumes that parent process is aware of url loaded in tab, so it can display some of info in Page Info window immediately. 2) ER is description of a good async UI (if "good" is applicable to "ASYNC"). Reporter will admit that report is invalid if and only if parent process isn't aware of url in hang tab (and it's logical).