Reactor planner buggy?

Lol its doing some weird stuff there

The plating is what marks the top three and bottom five as active coolants. Now, Al's info thread says:

Quote from Alblaka

2. Reactor Plating
Reactor Plating serves multiple functions:
It can store 10000 heat and will (though 10 times slower then a coolant cell), cool itself down as well.
More important, it can transport heat to adjacent components. If a reactor plating is heated up by something, it will instantly divert the heat among all surrounding coolant systems. Even to other platings (which will again divert the heat, however, NOT to other platings anymore).
Additionally, each piece of plating will increase the Reactor Hull's integrity, causing it to to take more heat before melting.

I suspect the calculator may be overestimating the distance the plating spreads heat. Honestly, I'm not sure what's going on, but it's definitely weird.

What happens here is reactor planner incorrectly ampplying hull plating behavior to coolant cells. When plating absorbs heat from uranium cell, it can spread that heat into all surrounding components. It can also pass heat to another plating (level 2 plating), which can spread that heat to nearby components. Coolant cell in planner is acting like hull plating and passing its heat to nearby components. It is, however, very unpredictable as very different results can be achieved when playing with planner.
I also used all my ms paint skillz to create image showing how it is and how it should be. I'm not sure if this bug is present in game too or not.
(the top coolant cell should not be getting any heat, but it does)