7^6

Do you mean something like `let worker = new window.Worker('{script url}')`?

https://github.com/117649/Tab-Groups/blob/9c651d7cf72e9139b883f3bfbb19c3ba5eb416be/resource/modules/FavIcons.jsm#L202-L259 One place I know. Would [load frame script](https://developer.mozilla.org/en-US/docs/Mozilla/Firefox/Multiprocess_Firefox/Message_Manager/Frame_script_loading_and_lifetime) also tripping your alerts? That's a way more common use.

Have anybody notice that script load use `loadFrameScript` is not executing on non-chrome tabs? ``` let mm = window.getGroupMessageManager("browsers"); mm.loadFrameScript("chrome://browser/content/tab-content.js", true, true); ``` I tried same code as above but...

I've added 'console.log('hello from *' + content.document.title + '*')' as log at the first line of a real script in dev tool. Here is the comparison:  This is not...

This is just weird. Do you have any preference setting in **About:config** that is special?

Ok, I think I know what is it. I'm using load extension form folder. It seems that hit some security barrier. Installed it again with a proper .xpi now it...

> @117649, > > If you are using Mac then you can only load extensions from folder in `Extensions` folder > > ``` > ; Per-user and system-wide Extensions dir...

I don't know much about others but addons I'm maintaining would have a release if its working on current Fx. list: https://github.com/117649/Tab-Groups https://github.com/p1usminus/roomybookmarksredux (This is maintaining by @p1usminus) https://github.com/117649/DownloadStatusBar https://github.com/117649/AdvancedLocationbar2...

All WE replacement lack the very soul of this addon: full window Tab view UI.

Its looks like the flex css rule problem. That is due to mozilla removed old custom rules from xul time. It should be a simple fix by replace them with...