1398245 - [WebExtensions] browser.extension.getBackgroundPage(); Does not work from private window.

Status: RESOLVED DUPLICATE of bug 1329304

(WebExtensions :: General, defect)

Description

[kroppy]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:57.0) Gecko/20100101 Firefox/57.0
Build ID: 20170908100218

Steps to reproduce:

Make a sidebar that has script that tries to communicate with a background script using: var bg = browser.extension.getBackgroundPage();
(to add more salt to injury, why isn't it chrome.extension.getBackgroundPage(); ??)


Actual results:

browser.extension.getBackgroundPage(); results "null" in private windows


Expected results:

In Chrome, Vivaldi and Opera there is a checkbox in extensions page that allows this to work in private windows.
In Vivaldi and Chrome it's called: "enable in incognito"
In Opera it's called: "Enable in private mode"

Firefox lacks this possibility making many extensions unusable or impossible to convert from Chrome.