When i am climbing and in the mean time watch other aircraft on the ground or do tower view, the landscape gradually gets more snow. I think the wrong temperature is used, namely my current temp at alt. I would expect the temperature at ground level to be used. Probably that of the metar.
If i set landmass shader to halfway, the issue is not there. I am on 3.4, but i think i saw it 3.2 also.
Kind regards, Vincent