Stock X5S camera with strong magenta cast when set with Manual White balance in sunlight with Gray Card. Second image in GIF shows correction to Gray Card with Color Correction 05 Green Filter.
I had to scrounge around eBay to find the CC Green ones. I had to use a stronger CC 10 Green for the stock lens too where the Olympus 45mm took a CC 5 Green.
I discovered Lee Filters still makes them in a resin film. Samy's Camera in Los Angeles sells them online for the cinema guys in Hollywood who tweak their cameras. Seems DJI has allowed this error for a couple of years on their Pro Systems forum website with the X5-series (Here: X5 color temperature settings ). Time will tell if they ever fix it, but given the wobbly props issue, it might be never too.