Wrong weapon XP bug

[Captain Chris]

Just finished a mission on Average as a Sniper, level 4.
At the end, the XP bar said I was level 1 and gave me XP for the Heavy Bolt Pistol and Thunder Hammer, there was not even an Assault on the team!
Back on the Barge, my level was correct and the XP counted, I made Lvl 6, but my Sniper weapons got 0 xp and the HBP and TH got full level, but no perk point and no overall weapon XP!
New bug? Anyone else had this?

[Chemicalx]

ive def had this when i was playing Heavy and trying to level my Heavy Plasma

[puRe]

Had this once while playing the Assault. It gave me xp for the bolt rifle of the Tactical.

[Padds]

yep got xp for the heavy bolter while playing as van, and had cases where the xp for weapons simply didnt get counted

[ookisaru]

Had this happen twice to me this evening. Most annoying.

[Mesjaf]

Same here. When I play heavy I get exp for the first operation to the weapon I was playing previously like just now I got exp to Bolter Rifle from Tactical, although it gives no exp to that weapon.

[Laczahh]

Happened to me aswell, playing Tactical (lvl25) with 2 friends. The mission starts like if I were joining a random team and asks me to select a class. After selecting tactical again, we finish the mission and I got Xp for heavy plasma incinerator and plasma pistol, not my actual weapon. After that I checked and neither the plasma wep nor my actual wep got XP.
Yesterday same thing happened, but I got XP for power sword +plasma pistol on the end game screen and showed that my lvl was 13 instead of 25