Fixing Missing or Flat Sun and Moon Visuals

Checking Video and Sky Settings

If the Sun and Moon do not appear at all, or if they still look like flat squares after activating the pack, a video setting or weather condition is usually hiding them. Start by checking your client display toggles:

• Open Options > Video Settings (and check the Details submenu if you use a graphics mod such as OptiFine) to verify that Sun & Moon rendering is turned on.
• Raise your Render Distance slightly if it is set to minimum, as heavy low-distance fog can obscure the skybox in some setups.
• Check your Clouds setting; when standing near cloud level, solid clouds can pass directly in front of the sky. Temporarily toggle clouds off to confirm the celestial bodies are behind them.

Reloading Assets and Resolving Conflicts

When video settings are enabled but the sky still looks flat, another active pack or an incomplete asset reload may be overriding Cubic Sun & Moon.

• Open Options > Resource Packs, move Cubic Sun & Moon to the very top of the Selected column, and click Done.
• While inside a world, press F3 + T to force Minecraft to reload all active resource pack models and textures.