Niklas Gollenstede Reporter
	Description • 6 years ago

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:60.0) Gecko/20100101 Firefox/60.0
Build ID: 20180322152034

Steps to reproduce:

Loading an unloaded (discarded, not yet restored) tab (at least in response to closing a tab) removes its favicon even before it changes it's state to `{ discarded: false }`.
From an UI perspective it wouldn't make a difference to keep the icon untill a new one is found or the tab stops loading (because the icon will be replaced by the page load indicator).

This matters if the page load is aborted, e.g. with `browser.tabs.discard` before a new icon is found. The icon is gone and won't (and can't be with a WebExtension API) restored.
The otherwise meaningless action of shortly focusing a tab in response to another tabs closing before switching to an extension chosen alternative tab thus removes the favicon. This can currently not be prevented or reverted with the WebExtension APIs.

Context:
I am porting this extension: https://addons.mozilla.org/firefox/addon/unloadtabs/
Specifically it's "avoids loading tabs when the active tab is closed" feature.


Actual results:

Favicon is gone.


Expected results:

Favicon should stay / be restored / be restorable.

	Robert AB
	Comment 2 • 6 years ago

Similar bugs:
Bug 1427822
Bug 1451799

(Make this bug as a duplicate of one of above bugs)

	larabe
	Comment 3 • 6 years ago

So any news on this? Is it planned to be fixed?

	Dão Gottwald [:dao]
	Comment 5 • 6 years ago

Has bug 1453751 improved this in Nightly?

	Niklas Gollenstede Reporter
	Comment 6 • 6 years ago

It seems unchanged. The first update fired when loading a discarded tab is still `{ favIconUrl: null }`.
Ill attach a screenshot that also shows bug 1450371.