[Holding Zaw weapon after logging in]

So it takes back to yesterday. I logged into the game as usual, my frame (at that time it was frost prime) stands up from its kneeling position. But then I noticed he was holding my zaw weapon in his right hand. It's not like he's in the stance of melee (in my zaw case, heavy blade) animation. He was standing in the usual not-holding-any-weapon standing position with frost noble animation, only holding the zaw weapon in his right hand. 

He was still holding the weapon after going into fortuna/orb vallis, and still was holding the zaw during missions. I tried changing frames, changing weapons, and after quitting game checked game files and there were no errors/missing files. This bug only happens when I'm holding the zaw weapon. All the other weapons (including official melee weapons) are back to it's original holstering positions. 

Need help fixing this bug. It's super annoying to see my zaw peeking from outside the screen when looking down sight during battles.