Dark Split-Sword Randomly Stops Working

[(PSN)EnkerZan]

I can't figure out the cause of this, but when I use the Dark Split-Sword in either 2h or dual spec, it will randomly glitch out on you in the middle of a mission. And by glitch I mean cease to be able to perform any melee attacks period. If you mash the quick melee button, you can see your Warframe fidgeting trying to perform the melee attack and can't. The only way to get it to go away is to bleed out completely during a mission and respawn, but the glitch will still randomly occur. 

Additionally, this weapon is also bugged in the profile display. I have leveled this weapon twice now, once in dual spec, and once in 2h spec, and it still appears grayed out as if I do not own the weapon. However it does show up in my codex as mastered, so clearly this is a display bug.

I hope this bug gets fixed soon, currently the weapon is not useable in its current state due to the bug happening very frequently.