Problems with autogrouping

I have been trying to setup some autogrouping. I want firefox and
chromium to group on workspace 1.

This is what I have in my apps file:

[app] (name=Navigator) (class=Firefox) (role=browser)
  [Workspace]   {1}
  [Tab]     {yes}
  [Maximized]   {yes}
  [Close]   {yes}
[end]
[app] (name=chromium-devel) (class=Chromium-devel) (role=browser)
  [Workspace]   {1}
  [Tab]     {yes}
  [Maximized]   {no}
  [Close]   {yes}
[end]
[group]
 [app] (class=Chromium-devel)
  [Workspace]   {1}
 [app] (class=Firefox)
  [Workspace]   {1}
[end]

They go to the right workspace, but they won't tab.

I have also had problems with tor browser, in that if I try to save
any options using the windowmenu, it removes itself from [group]

Am I missing something here?

Thanks in advance.

Dave

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