WebExtensions : Get tab favIconUrl on Firefox Android

Add-ons Development
#1

Hello, I am developping an addon with WebExtensions API and I would like to get the favicon url from tabs. I use the code below and it is working on Firefox Desktop but the property favIconUrl is undefined on Firefox Android :


//Tab open
browser.tabs.onCreated.addListener(function(tab){
	console.log(tab.favIconUrl);
});

//Tab update
browser.tabs.onUpdated.addListener(function(tabid,info,tab){
	console.log(tab.favIconUrl);
});

I precise that my manifest.json contains the “tabs” permission.
According to MDN, the favIconUrl property is supported since Firefox Android 54 and :

favIconUrl Optional
string. The URL of the tab’s favicon. Only present if the extension has the “tabs” permission. It may also be an empty string if the tab is loading.

Source : https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/tabs/Tab

So how can I get favIconUrl on Firefox Android ? :thinking:

#2

I suggest you file a bug report and ideally include a minimal test case that demonstrates the issue.

#3

Ok, I reported the bug on https://bugzilla.mozilla.org/show_bug.cgi?id=1414498.