hanu6 Reporter
	Description • 6 years ago

User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0

Steps to reproduce:

Load the attached example addon via about:debugging.

Open console (ctrl shift K)
Head on to www.twitch.tv and during the page load spam click the addon button.


Actual results:

The window.test is "undefined" more than once.
example console output:

undefined ExtensionContent.jsm:506:4
test ExtensionContent.jsm:506:4
test ExtensionContent.jsm:506:4
undefined ExtensionContent.jsm:506:4  <-- should not happen
test ExtensionContent.jsm:506:4


Expected results:

window.test should be undefined exactly once (first click). Instead, it is randomly lost. Happens on twitch.tv. Haven't seen it happen on other websites, but then again, haven't been testing.

tested on 63.0.3 and 65.0b2.

	Timea Cernea [:tbabos][inactive]
	Comment 1 • 6 years ago

Hi hanu6,

Reproduced the issue on latest Nightly 66.0a1 (2018-12-17) (64-bit) as well on Windows 10 x64. 
Not entirely sure for the component, thus will move it over to WebExtensions for now. Please feel free to move it elsewhere if needed. 

Thanks for the report!