Fix tabs not being active when restoring state

[nairaner]

Regression introduced by 29ebc83

[githubuser0xFFFF]

Thank you. Could you tell me how to reproduce the problem. I just tested before the merge and yould not reproduce the problem?

[nairaner]

I'm not exactly sure why it happens. I just add 6 DockWidgets to DockManager and restore default layout. I also tried using new version of layout XML , but it didn't change anything. You can probably reproduce just this layout XML.

<QtAdvancedDockingSystem Version="0" Containers="1">
  <Container Floating="0">
    <Splitter Orientation="-" Count="3">
      <Splitter Orientation="|" Count="2">
        <Area Tabs="1" Current="Structure">
          <Widget Name="Structure" Closed="0" />
        </Area>
        <Area Tabs="1" Current="Relation">
          <Widget Name="Relation" Closed="0" />
        </Area>
        <Sizes>388 387 </Sizes>
      </Splitter>
      <Area Tabs="1" Current="Viewport">
        <Widget Name="Viewport" Closed="0" />
      </Area>
      <Area Tabs="3" Current="General">
        <Widget Name="General" Closed="0" />
        <Widget Name="Appearance" Closed="0" />
        <Widget Name="Camera" Closed="0" />
      </Area>
      <Sizes>296 697 254 </Sizes>
    </Splitter>
  </Container>
</QtAdvancedDockingSystem>