Please tell us some basic information before asking for help:
Model Name: Asus Rog Phone 3
Rooted or not:
Frequency of Occurrence:
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.
Some apps like gallery , messages , camera and system update app didnt show proper current theme , but default dark or light themes.