1616305 - Global zoom fails to propagate to existing tabs when site-specific zoom is disabled

Status: NEW

(Firefox :: Disability Access, defect, P3)

Description

[Morgan Reschenberg [:morgan]]

After landing bug 1603494, the following workflow is possible:

1. Disable site specific zoom in about:config
2. Set a default zoom level in about:preferences
3. Open new tabs for any domain, see your default zoom level reflected

However, the following currently does not work:

1. Disable site specific zoom in about:config
2. Open google.com
3. In a new tab, navigate to about:preferences and set a default zoom level
4. Open twitter.com

Expected:
Twitter and google have adjusted to the default zoom level set in (3)

Actual:
Twitter has adjusted to the default zoom level set in (3) but google has not.

My guess is there are listeners that we disable when site-specific zoom is off, and so even when a tab that existed before the default zoom level was set is made active, it doesn't "hear" the change.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The priority flag is not set for this bug.
:asa, could you have a look please?

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