I have recently updated to the V6.7140 firmware and when playing a DV source via Netflix or any other application installed on the TV, the DV icon pops up and the panel appears to go into DV mode, but the picture is not displaying in Dolby Vision. The colours appear off and the picture colours change fairly frequently with a green and purple hue.

HLG appears to be fine on iplayer, but Dolby Vision is now not working post the V6.7140 firmware upgrade.