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This doesn't always happen, but every time I open Terraria and go into any world, random items will sometimes disappear. Not sure if anyone else has posted anything about this invisible item bug.
Note: If Terraria is still running, exiting a world and reopening a world will not fix this bug...
Almost every time I open Terraria I see this on the main menu background or in-game.
Also on a side note about bugs and glitches... is it me or is this "loading...