As the Title says.
There is a floating texture, that moves around with your Character if you are wearing the "Eyes of Mercury" Ornament for Sunbracers.
It is only Visible if you look into a specific direction. Look in the direction of Crow when you Spawn in the H.E.L.M., and you should be able to Spot it.
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Can confirm. Floating geometry any time I’m wearing Sunbracers with the ornament equipped.