Fast Charging on my S6 Edge+ Pauses - Except if I'm in a call

A

AC Question

So my Fast Wireless charger (samsung original) no longer works after my most recent tmobile over the air update. I have 3 wireless chargers and my wife has an S7. I can verify my phone, which has charged fine wirelessly for over half a year, will no longer charge without pausing (regardless of screen on/off) on any of the three chargers (all samsung chargers). My wife's phone will charge on them just fine still.

BUT, if I make a phone call (to my vm or whatever) and set it to charge, it'll all work fine. I give it about 5 or 6 seconds then hang up the call and the phone continues to charge great, like it did before.

I'm completely stumped. Any thoughts?