Save dialogue selection arrows missing.

As the title says, when you for example get all the red coins and get the star in the stage just before the first Bowser boss battle, you will be asked if you want to save. The arrows are invisible here, so you don't know what is selected. I have the game running at 60fps, so I believe this is a interpolation issue possibly, but I haven't tested it at 30fps yet.

Reproduce the save dialogue after collecting all red coins and the star before the first Bowser boss battle. Compare the selection arrows at 60fps and 30fps, then trace the save-dialogue rendering entry point to identify why the arrows are invisible. Done means the selected option is visibly indicated at both frame rates.

Written by the indexing model from the issue text.