[0.13.4] Flight doesn't have research button

[Koekebakker]

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.

[Zeblote]

You are already researching flight.

[arbarbonif]

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).