New iPad battery drains while off
I bought the new iPad in July and about once a month the battery will completely drain overnight while being completely shutoff. I looked at the battery activity and it appears the battery thinks the screen is on for 60 minutes every hour which causes the battery to drain. It happened last month after I charged it to 100%, turned it off and then the next day it was dead (I attached a pic of the battery activity from then). I thought maybe it was my case being closed too early and the magnet triggering the iPad to stay on so I took the case off but it happened again last night. Does anyone have any idea what could be causing this to happen? I believe it would be something happening during the shut-off process to trigger it.
iPad (6th gen) WiFi