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Avoid placing content off-stage. Instead,
just place objects on the display list when needed.
If possible, try not to place graphical content off-stage. Designers
and developers commonly place elements off-stage to reuse assets
during the lifetime of the application. The following figure illustrates
this common technique:
Even if the off-stage elements are not shown onscreen and are
not rendered, they still exist on the display list. The runtime
continues to run internal tests on these elements to make sure that
they are still off-stage and the user is not interacting with them.
As a result, as much as possible, avoid placing objects off-stage
and remove them from the display list instead.
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