Downed player incorrectly shows a medic nearby

I got called out in game chat for not reviving a player that was nearby.  I responded that I'm not playing support and I'm not in their squad (I had played the entire match as engineer).  They responded that their UI showed me as a medic.  My suspicion is that I briefly picked up a support kit, immediately dropped the supply box, and picked my engineer kit back up, but for whatever reason they were still seeing me as a nearby medic.