I encounted a weird bug in Xbox One version of Fallout 4. I've been boosting up my characters melee skills throughout the game (by picking all perks that affect melee skills positively), but as soon as the character hits LVL42, the damage drops rapidly. E.g. with the weapon I've currently using (most powerful melee weapon I've found so far), the damage drops from 164->91. Similar drop is seen with all melee weapons I have.

Nothing in my gear has changed and the character doesn't have any limb damage etc. that would explain this. I've also already tried replaying from a previous save, couple of levels back and the same repeats again, as soon as I hit level 42.

Screenshot from level 41: http://i.imgur.com/RCSW4CW.jpg

Literally 2 minutes later, when hitting level 42: http://i.imgur.com/YObkFFO.jpg