After a few hours into the game (Hard difficulty level) i got to Monarch, at first it was all going fine, raptidons and mantisaurs were capable of hurting me as well as melee marauders....until they just stopped. I have no idea of what triggered this, i was just doing some sidequests outside of Stellar Bay and all of a sudden i was immune to melee damage. Any other form of damage is still working (acid, fire, bullets...). Also my companions can take damage from all sources (melee included).
I tried loading a previous save, changing difficulty, unequipping-equipping stuff, respec my abilities, but none of that worked. Only starting a new game seems to get rid of the bug.
If someone could please help me solve this or investigate the issue, i would be grateful.
P.S. i'm not english and this is my first post on the forum, i apologize for any mistake i might have made.