I am playing a heavily modded version of Minecraft, but this shader seems to be causing the issue. For some reason when I look up at the sky or far away, there is a speck at a seemingly random angle around my crosshair. Using a zoom mod, it appears to be a floating lantern. I have absolutely no earthly clue what could cause this or how to fix this. Attached are some screenshots. I am willing to share my game files if requested.

Here is a screenshot zoomed out.

This is it zoomed in with a mod.

Maybe my game is just haunted? O_O

The lantern also rapidly changes position as I move around. Perhaps this is some sort of bugged display entity?