Luís Miguel

That's very weird. Let's start with the most obvious, can you please try installing Tab Groups in a [new profile](https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles) and see if it still happens there?

> console.log: TypeError: tab.extData is undefined Does it say in which file and line? `extData` is where the groups information is stored, i.e. to which group does a specific tab...

I do like it, it's one of the things I've been considering to enhance the behavior of closing tabs. I'm not sure when I'll be able to get to it...

@childnode once again, that preference has nothing to do with this. I believe you're misunderstanding the [original intention of that preference](http://kb.mozillazine.org/About:config_entries). Regardless, if that preference were to have a role,...

Sounds very interesting. Since I don't really use Sync let me ask you (as you probably will have an answer for this or can find out much faster), if you...

> @Quicksaver In my previous post I was referring to your hourly rate mentioned on http://fasezero.com/addons/ I'm sorry I must have missed that, did you edit that after writing the...

I wanted to include this for the very next version, but apparently implementing it may be somewhat complex. So sync features won't make it on the very next version, although...

That makes sense. It should sync the tabs but not "which" tab/group is active. That shouldn't be a problem, once I get to this of course.

Unfortunately no, I have to postpone working on major features like this for a while, until I can be sure about how WebExtensions will work (or not).

Not really, the two would serve very different use-cases, and could probably even complement each other. They're not mutually exclusive at least.