Thanks Jonni. Just for some more clarification of the bug, you can increase your stock beyond 500,000 using space centre. So what I did was move 500,000 missiles into space centre. Did immediate purchase of 1 missile. Unloaded the stock from space centre and confirmed I had 500,001 missiles. Then I tried doing another purchase, and it reset my stock to 500,000. I also received this message, which I never seen before:
"Your immediate order for land based cruise has been executed. Unfortunately, there is not enough available on the market.
The purchase order is listed with your other purchase orders and will be traded as soon as possible."
This message appears even when there is available stock. When I look at my purchase log, it shows a purchase has occurred and cash deducted, but no stock delivered. The purchase is also not listed with my other pending purchase orders.