Weird bug when selling offal to restaurant

[VDZ]

The default selected value was -30, and I could neither change the amount nor hit the sell button.



This is what the restaurant looks like in the trading interface; it indicates it should have capacity for 20 more Offal. In my inventory I was carrying 7 Offal (and 85 Girders). Notable here is that the 'Inv' count in the sell interface appears to be the sum of what's in the building and in my inventory rather than one or the other. The '0 of 0' implies that perhaps Restaurants may not have been affected by (or are malfunctioning due to) the change to workers affecting stock capacity. (Don't recall if the building had a worker; probably not. Name was 'Simple Foods', building ID was #455. Issue also occurred for me on building at other restaurants, though I was eventually able to sell the items to 'Free World Inn'.)