Train Sim World 3 Wipers Stop Working On Class 377 And 387 On London Commuter

I've been playing London Commuter in snowy conditions lately, however I've encountered a frustrating bug. The windscreen wipers on both the Class 377 and 387 stop working (in the timetable mode and scenario planner) - I've noticed this seems to happen if the wiper is at high speed for long periods.

I hope this bug can be fixed by DTG as it makes playing in blizzard conditions completely impossible - thus I normally restart the service and change the weather.

 

This also affects other routes such as luzern sursee.