Steam London Underground - Rain Or Snow In Underground Stations

In the past weeks I was playing mostly the London Underground Bakerloo Line with TSW3 (PC/Steam) and completed the "Life on the Underground" journey and started the "Past Life on the Underground" journey.

Some days ago, I decided to give TSW4 a try. So far, so good, but when i continued the "Past Life on the Underground" journey and did a service where the weather was rainy, I suddenly had rain in the underground stations! Not in the tunnels, just within the stations. The same goes for snow weather.

I did a search on snow/rain and London underground, but didn't find anything. Has someone else observed this oddity, or am I alone with this?

 

I tried out the new Photo Mode feature for this. As one can (hopefully) see, it rains with both the Mark 2 Tube Stock and the 1938 Stock EMU, and at least with the Mark 2 I am sure that this didn't happen with TSW3 before.

 

You'll never walk alone