Why does the beauty preview change when the POCO F7 Ultra front camera switches from Photo mode to Portrait mode?

We sincerely appreciate your continued support. This phenomenon is to display the image first in order to quickly obtain the image when switching to Portrait mode, and load the portrait beauty algorithm synchronously. The beauty algorithm loading time is long. This is a normal and expected behavior of the system and is not indicative of any malfunction. Please rest assured that it does not impact the functionality, performance, or stability of other features on your phone.