Factorio Forums

I can't research "Flight". The research button won't show up in the upper right corner (see screenshot).
The rest of the technoligies I have so far, don't have this problem.

You are already researching flight.

There is an issue with the button display. I've had several cases where the research button renders almost entirely off the screen. It seems to happen if I jump to the tech from the tree, instead of from the grid (or when I jump around selecting via both the grid and the tree). On my screen I can see the left most half inch of the button (which I can click on and start the researching).