"x points to node" counts wrong, probably in conjunction with thread of hope

[hgfedcba]

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What is the expected behaviour/value?

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It should display that I need 2 skill points to allocate assassination

What is the actual behaviour/value?

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It displays that i need 3 skill points instead

How to reproduce the issue

1. Open my PoB
2. Hover over Assassination
3. I need only 2 to skill it and I only use 2 skill points when I skill it, but it calculates that it needs 3, so the per point calculation is wrong, see screenshot below

Character build code

https://pastebin.com/GzetbBcL

Screenshots