The textures for the different states of the structure block are incorrectly applied. They account for the "Data" mode, which doesn't exist yet. This causes all the textures to be offset.

• "Save" uses the "Data" texture;
• "Load" uses the "Save" texture;
• "Corner" uses the "Load" texture;
• "Data" uses the "in-hand" texture.

The only mode that uses the correct texture is "Export".

This can be confirmed by either looking at Java Edition or the textures' names.