Just noticed this tonight, dunno if it’s an isolated issue or if others have experienced it, but when I would equip a kit on my Engi in an SPvP match it would switch to my PvE weapons (checked on hero screen). When I switched out of the kit my PvP weapons would properly reappear, but every time I went into kit mode it was giving me my PvE weapons.
The issue with this is that my sigils were not applying their bonuses. I run a Superior Sigil of Perception on my pistol and was not getting stacks of the bonus when I got kills with a kit out. Damage and other functionality seemed normal, but no sigils.