Was Chrome marking "discarded" tabs in some way?

Juraj M.

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May 22, 2026, 3:48:00 PMMay 22

to Chromium Extensions

I've received reports that discarded tabs are not marked as such in Chromium anymore.

I can definitely confirm, that discarding tabs with:
https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/tabs/discard

makes absolutely no UI change to the discarded tabs.

Is this a regression?

kg_17

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May 22, 2026, 6:30:21 PMMay 22

to Chromium Extensions, Juraj M.

I mostly use Firefox, so take this with a grain of salt, but I don't think chrome.tabs.discard has ever made visual changes to a tab in Chrome.

Mythical 5th

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May 22, 2026, 6:36:02 PMMay 22

to Chromium Extensions, Juraj M.

There is an "Inactive tabs appearance" setting. In the image, the middle tab is discarded.

Screenshot From 2026-05-22 23-33-51.png

kg_17

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May 22, 2026, 6:46:26 PMMay 22

to Chromium Extensions, Mythical 5th, Juraj M.

Proactively discarding a tab in chrome://discards page will change the favicon and maybe when tabs are discarded through Memory Saver, but I'm pretty sure the favicon has never changed after using the chrome.tabs.discard method.

Juraj M.

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May 23, 2026, 3:23:45 AMMay 23

to Chromium Extensions, kg_17, Mythical 5th, Juraj M.

There an issue for it in Firefox bugzilla tracker:

https://bugzilla.mozilla.org/show_bug.cgi?id=2000401

And I've reported it to Chromium:
https://issues.chromium.org/issues/513291776

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