Hi to all,
I have noticed that the BSS159 model (from the SamacSys web site that I use with Altium) can be wrong.
(You can see it here: BSS159NH6906XTSA1 footprint, schematic symbol and 3D model by Infineon (componentsearchengine.com))
It swap the source with the drain pin, compared to the information of its datasheet.

Can you confirm this my observation/suspected, please?

 

Looks like the symbol in the ad has the drain and source swapped?
I would go with the actual spec sheet.