Observer Back Lit Texture Has Incorrect Pixels and Inconsistency with Java Edition

The observer_back_lit texture in Bedrock Edition contains incorrect pixels in the top-left corner compared to Java Edition's observer_back_on texture. This visual discrepancy is noticeable during gameplay when the observer is activated, particularly when forming a high-frequency clock with two observers facing each other.

Compared to its own unpowered observer_back texture, this is clearly a texture error in Bedrock Edition, unrelated to the observer's pre-1.15 implementation.

How to Reproduce:

1. Create a high-frequency clock with two observers facing each other

2. Visually inspect the powered back texture

3. Compare with:

   • Java Edition's powered back texture

   • Bedrock's own unpowered back texture

Observed Result:

• Visible pixel artifacts in top-left corner when powered

• Inconsistent with both Java Edition and its own unpowered state

Expected Result:

• Powered back texture should:

  1. Match Java Edition's clean implementation

  2. Maintain consistency with its own unpowered texture

• Should not show pixel artifacts in any state