I've noticed that whenever it starts to rain at Singapore, it isn't visible at all on track (as was the case today for me when it suddenly started to rain, the track has 0.3 mm water, but apart from a very slight change to how the track looked, the rain wasn't visible at all). This might be the case just on mobiles maybe, maybe on PC it's visible, but I suggest that rain at Singapore should be made visible, so that it doesn't catch anyone off guard. All the other tracks you immediately know when it starts to rain, so I don't understand why that's not the case with Singapore.