X-Plane 11 Strobe Lights red?

Question

Guys, an issue of my aircraft lights. I've recently noticed that the strobe lights seem to be flashing red, but the reflection on the ground is white as it should be?

(It is the same for ALL XP11 aircraft)

Any help as to fix this?

Thanks

Image - https://gyazo.com/e2d1340a1b5d028eb3581c0a1a15739d