Please tell us some basic information before asking for help:
Model Name: rog phone 3
Firmware Version: 31.0210.0210.230
Rooted or not: not
Frequency of Occurrence: always
APP Name & APP Version (If your issue relates to the app):
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
Just realized, when i try to switch app from bottom to top display n vice versa, screen size will shrink..even on switch app screen, it shown black bar on app viewer..
I cant upload it here, size too big..https://drive.google.com/file/d/170kvDCXbEghkMp6AumBraYZJeNqMu3ux/view?usp=drivesdk
Afaik it only happen with game..i tried chrome n facebook n no problem..