1340507 - Closing a tab (on which resources are not completely loaded) returns “TypeError:> this.browser.webProgress is undefined”

Status: RESOLVED INVALID

(WebExtensions :: Android, defect, P5)

Description

[Rares Macarie]

Attachment: every-event-1.0.xpi

*Environment*
Firefox: Nightly 54.0a1
Mobile device: Samsung S7 (Android 6.0.1)


Prerequisites: 
-	Install “every event 1.0” add-on in Firefox (attached, if needed)
-	use web console to catch errors

*Steps to reproduce*
# Run Firefox Nightly.
# Open a tab and go to any website.
# Close the tab and observe what the console returns.

*Expected results*
No errors are returned.

*Actual results*
The console returns:

TypeError: this.browser.webProgress is undefined[Learn More]  ext-utils.js:419:1
background.js:4
Event fired: browser.tabs.onRemoved  background.js:5:3
Arguments:  Array [ 7, Object ]  background.js:6:3
"https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/tabs/onRemoved/"   background.js:7:3

*Notes*
# Reproducibility: 5/5.

Comment 1

[Rares Macarie]

Additional info!
It seems that the issue is reproducible when closing a tab on which not all resources were loaded.

Regards,
Rares

Comment 2

[Luca Greco [:rpl] [:luca] [:lgreco]]

GeckoView/Fenix do not use this code anymore.