Larian Studios Forums Divinity: Original Sin 2 - The Modding Dungeon Divinity - Original Sin 2 - Modding Troubleshooting DLC tab unavailable/missing in game properties

I got the same problem here. I first bought the package Divinity: Original Sin 2

And there is no DLC option from steam properties.
Then I bought Divinity: Original Sin 2 - Divine Ascension

But in the DLC tab I can only find the Divine Ascension DLC without the Data DLC for included.