🐛 Fix issue where icon was hiding while document still loading

Author: kierandrewett

components/tabs/content/browser-internal-tab.js

@@ -429,6 +429,7 @@ class BrowserTab extends MozElements.MozTab {
 
 		const shouldHideIcon =
 			(!iconURI.length || iconURI == BrowserTabsUtils.DEFAULT_TAB_ICON) &&
+			!this.linkedBrowser?.docShell?.isLoadingDocument &&
 			!initial;
 
 		if (shouldHideIcon) {

third_party/dothq/gecko-types/lib/nsIDocShell.d.ts

@@ -31,4 +31,6 @@ export interface nsIDocShell {
     doCommandWithParams(command: string, params: /* @todo nsICommandParams */ any): void;
 
     QueryInterface: (obj: any) => any;
+
+    isLoadingDocument: boolean;
 }