Redundant palettes when using automatic palette function

[shin-gamedev]

Describe the bug
When using the automatic palette function, multiple identical palettes are often produced containing the same colours.
This often increases the palette count beyond the necessary amount to display a background. This is an issue because I want to reserve the 8th palette for UI, or just use the maximum amount of palettes possible in my background.

To Reproduce
Steps to reproduce the behavior:

1. Create a background that contains multiple different tiles using the same four colour palette.
2. Build the game and check the background palettes in the debugger.

Expected behavior
Tiles with identical palettes in a background should only use one palette when using the automatic palette function.

Screenshots
Input background using a total of 2 palettes

Result with a total of 3 automatic palettes

Platform (please complete the following information):

• OS Windows 11 64x
• App version 4.1.3