Bravia core not showing dtsx

[D-Law81]

Hi I have the Sony X94J and have just got the Sony theatre system 6 but have noticed on bravia core the DTS X audio is not in audio options only Atmos and 5.1 any idea why it's been removed.. Used a DTS X blue ray and player and that showed DTS X with pass through on. Is it only Bravia core..?

[D-Law81]

This is what the TV says when playing Bravia core resident evil 

 and this is what the theatre system 6 says is playing.

 Any ideas why. Tried Sony audio and also DTS virtual X and says same, 5.1 Audio. 

 

[D-Law81]

Sony are looking in to this issue.