Map boss atlas points bug

Hello,

I've noticed today when trying to get the last two points for my map boss atlas that it may be bugged. I already had 6/10 , then i went and killed arbitrer and because i had the 2 points mapped in the arbitrer tree, the 4th book of knowledge wouldn't drop from doing a t16 map with corruption and irradiation. I fixed it by taking the 2/8 points out of the arbitrer tree and doing another t16 map with boss corruption and irradiation. Thank you for your time and i apologize beforehand if it was reported before.

Thank you so much. I was stucked in the same situation. Your solution worked fine.