My answer is this.
1. Mi 11 wireless charging automatically power off, is started the protection function.
2. Because millet mobile phone in the wireless charging, if the recurrence period produces a large current or short circuit, millet mobile phone will automatically power off, so as to avoid damage to the phone, so I think you 11 wireless charging automatic power off started the protection function.
This is what his phone has. It automatically cuts off when it's full