I have a TCL and I will check that out as well. I tried yesterday to play a DV movie and only HDR10 was popping up the icon. But with HBO I see the Vision logo. So Im sure there is some setting I need to check in order to see DV from the 203.I had this exact problem (see above my post). The problem was with my oled TV (panasonic gz960).
In the tv menu at HDMI options (it's a hidden option shown only when you're connected to a hdmi source) you have the option to configure HDMI Dynamic. There I have 2 options, which were both activated in my TV. First was HDR10+ and the 2n was Dolby Vision.
I switched OFF HDR10+ and left ON only Dolby Vision.
After this, every time a title has any of the enhanced formats (HDR+ and DV) it will automatically select Dolby Vision.
I searched long for this and found the answer myself. Maybe with your Philips you have a similar option in the menu. Check it out.