[Bug] Infinite training path xp -> infinite UAV drones

I joined a breakthrough match late and my Training path got insta filled.

Not only that, but I also got INFINITE UAV DRONES as my xp bar kept filling up as soon as I activated (see video attached)

No idea what caused this but it's not the first time.  The first time I got it was in siege of Cairo escalation (or conquest, not sure) but I did not join that game late