!todo cross in flag sizing wonky

!todo cross in flag sizing wonky
The `cross` is an ordinary that already extends fully to the edges of the field, that might be why the `entire` qualifier is unexpected.
Drawing a cross in the chief of a flag shape is a wonky though .. seems to be scaling wrong.

Start by reproducing the sizing problem for a cross in the chief of a flag shape, using the issue description as the expected case. Trace the flag rendering entry point to determine why the cross scales incorrectly; done means the cross has the expected proportions and placement in the chief.

索引モデルが issue の本文から書いたものです。