Sprite packing tag is not visible any more

I'm not sure since when but my Unity2019.1 doesn't show sprite packing tag field on import settings. I can still see the packing tag field if the inspector debug mode is enabled but I don't know if editing it directly would still make Unity pack sprites when the game is built.

Is anyone else having the same problem? Where should I look to fix it? The sprite packer mode is set to "Alwaus Enabled".

 

The Packing Tag is the legacy system. Perhaps it still works, but the new way to pack sprites to an atlas is through their SpriteAtlas asset:
https://docs.unity3d.com/Manual/class-SpriteAtlas.html

 

Ah, I didn't know the packing tag has gone legacy. Thank you for your reply!