Adding/Removing +skill item, removes random point/s above lvl 20

[K1ngJam3s]

I know that removing +skill item does not remove last skill assigned, this is to prevent Free Respec’s.
My concern is at level 20+. I had an item that gave plus +1 to all fire skills. I’m wanting to see what the DPS looks like when equipping it. I’m trying to min/max a build(to the best of my abilities). I’m not an expert. I assign the skill points to all my skills to make them level 21 (I have all fire skills). Take a look at the DPS and decide its not for me. But is does not remove the skill point I just assigned, it removes a random skill point. I have no clue on some of the skills which point it removed, but I know it was not the one I just assigned( like I said I’m not an expert so there may be something/somewhere that tells you what skill point was changed).
My fireball skill removed the homing skill which just crushes the skill, now have to relevel all my skill from 19 back to 20(and I’m not sure where to even begin with). I’m not sure what interactions will break or make my character, so I like to try out things and look at the DPS.
For all I know this is also intentional. But at level 20+ skill, removing random skills(I’m sure it can only remove skills that are on outer edges) this seems like you could just add/remove in attempt to respec, more easily instead of removing the skill that was just added by gear? I’m sure there something I’m missing. Just looking to see if this is indeed a bug or not?

[psychodrive]

For what its worth, the skill point removed isn’t random.

The point removed comes from nodes which have

high investment that won’t cause a dependency problem tie break is the order in which it was placed in the list which we don’t have listed anywhere

Source: Discord