Fixed options standalone detection.

options/options.js

@@ -34,8 +34,22 @@
 		}
 	};
 	
-	if (window === window.top){
+	new Promise(function(resolve){
+		const port = browser.runtime.connect();
+		port.onMessage.addListener(function(data){
+			if (data.hasOwnProperty("tabId")){
+				logging.notice("my tab id is", data.tabId);
+				port.disconnect();
+				resolve(data.tabId);
+			}
+		});
+	}).then(function(tabId){
+		return browser.tabs.get(tabId);
+	}).then(function(tab){
 		let head = document.createElement("header");
+		document.body.insertBefore(head, document.body.firstChild);
+		
+		if (tab.url === window.location.href){
 			let heading = document.createElement("h1");
 			heading.textContent = browser.i18n.getMessage("options");
 			head.appendChild(heading);
@@ -55,9 +69,9 @@
 				}
 			}
 			
-		document.body.appendChild(head);
 			document.body.classList.add("standalone");
 		}
+	});
 	
 	var table = document.createElement("table");
 	table.className = "settings " + (settings.displayDescriptions? "display": "hide") + "Descriptions";

releaseNotes.txt

@@ -6,7 +6,8 @@ Version 0.5.3:
 		- display version in options page
 	
 	fixes:
-		- 
+		- CSP did not work properly for worker-src
+		- detection if the options page was displayed in a separate tab did not work reliably
 	
 	known issues:
 		- if a data URL is blocked the page action button does not appear