Partially apply Themes

[Gouen]

Please tell us some basic information before asking for help:
Model Name: ROG Phone 5 ww
Firmware Version: .86
APP Name & APP Version (If your issue relates to the app): Themes
Is it only me or anyone noticed that we cant partially apply theme anymore? Like for example I would only love to have the animated lockscreen only while maintain my default system icon looks and wallpaper.