Save/Load operation may result in shape loss

[cedar roost]

When saving and loading a game, the number of shapes on a production-line may decrease abnormally.
I tested this on some closed loop production-lines. These test lines were designed not to lose any shapes. But after some save and load operations, the number of shapes decreased. I have attached a before and after comparison screenshot for reference.
Since it is not easy to count the number of shapes on non-looping lines, I can't confirm whether this problem also exists on non-looping lines.

[sinful tulip]

Thanks for the report. We are aware some buildings like belt filter delete the shape upon loading, but not to this extend. We will look into it.