No, you can't expect a floating floor subject to a localized hot spot to not expand in that one spot. You've got to get some film or a shade onto that skylight to prevent so much solar gain. And be sure that if you install a floating floor in a large room that there is an expansion joint in it to let it move enough.

TY Hollysprings - we will pay up for real oak plank then - also thanks for advice on refinishing wood floors in other thread.