1164017 - The app with several WKWebView freezes when restoring from background

Status: REOPENED

(Firefox for iOS :: General, defect)

Description

[Stefan Arentz | :st3fan | ⏰ EST | he/him]

This is a reference to the following bug on the WebKit tracker.

The app with several WKWebView freezes when restoring from background
https://bugs.webkit.org/show_bug.cgi?id=142583&list_id=673850

This is a noticable issue that users of our app have also reported. As noted in the above bug, it can take a few seconds for our app to become responsive again.

Note that this is not about *initial* startup time. This is about the case where you switch Firefox for iOS to the background by for example pushing the home button and then a bit later go back to the app. So in that case we are not killed and do not run the app state preservation/restoration APIs.

Comment 1

[Wesley Johnston (:wesj)]

Might not be much we can do here. It might be worth looking at removing webviews from the view hierarchy more often. I put them there because otherwise i couldn't get screenshots. Now we actually store those (sometimes?)

Comment 2

[BMO Automation]

Per policy at https://wiki.mozilla.org/Bug_Triage/Projects/Bug_Handling/Bug_Husbandry#Inactive_Bugs. If this bug is not an enhancement request or a bug not present in a supported release of Firefox, then it may be reopened.