Nested tabber breaks due to shared tab name

[Krazete]

Creating a nested tabber like in the README will produce a broken tabber if the parent tabber and the first child tabber have a tab name in common.

The parent tabber's ID is 0.
<tabber>
  Default={{#tag:tabber|
    Default=This child tabber's ID is 0 too.
    {{!}}-{{!}}
    Not Default=A
  }}
  |-|
  Not Default={{#tag:tabber|
    Default=This child tabber's ID is 1.
    {{!}}-{{!}}
    Not Default=B
  }}
</tabber>

I assume it has something to do with the parent and the first child both having an ID of 0.

I can avoid the bug above if I replace the parent <tabber> with the {{#tag:tabber}} format.

The parent tabber's ID is 2.
{{#tag:tabber|
  Default={{#tag:tabber|
    Default=This child tabber's ID is 0.
    {{!}}-{{!}}
    Not Default=C
  }}
  {{!}}-{{!}}
  Not Default={{#tag:tabber|
    Default=This child tabber's ID is 1.
    {{!}}-{{!}}
    Not Default=D
  }}
}}

But the parent tabber's ID is no longer 0. I guess the parent is processed last now.
A lot of links on our wiki rely on the parent tab anchors having the same -0 ending, so this isn't great.