Open inventory hotkey doesn't work in tight spot

[Roodvlees]

I've always used `E` to bring up the inventory in Factorio.
However in the single player scenario `Tight spot` this key does nothing.
I'll start the game, buy some machines and supplies, start the game.
I can't do anything beyond that, because I cannot access my inventory.

I also tried moving stuff to my toolbar.
But once the game starts, the toolbar disappears.

[Roodvlees]

I didn't realize construction was supposed to happen before pressing start.