[15.3] Tech tree lines sometimes misaligned by 1px

[Hexicube]

I've only noticed this issue on the Railway and Portable Solar Panel techs, and is not there for Logistics Robotics (which also has 3 follow-up techs).

http://i.imgur.com/iFWqVZW.png

As shown, the central follow-up tech icon has the connecting line shift 1 pixel to the left.

[Oxyd]

It's nearly impossible to get rid of all these cases where two technologies end up one pixel off of perfect alignment. You'll have to live with it.