Remove the message No elements defined for <block/item> model 'minecraft:<block/item>/air when minecraft:air is used, as it may give users the impression of an error.
Represent empty block/item display nodes as a 16x16x16 wireframe (for a scale of 1x1x1) that can be manipulated (positioned, rotated, scaled).
Address the visual differences between "" and {"text":""} for empty text display nodes in the editor.
Determine how empty text display nodes should be visually represented
No elements defined for <block/item> model 'minecraft:<block/item>/airwhenminecraft:airis used, as it may give users the impression of an error.""and{"text":""}for empty text display nodes in the editor.