If your Asus Launcher is currently on ver. 126.96.36.199.
Could you please try to restore the Asus Launcher for a check?
(settings > apps & notifications > see all apps > Asus Launcher > storage & memory >clear storage & cache)
If this problem still there, could you tell me do you use Chrome or Google app when you encounter this problem?
Do your "Navigation bar type" is Swipe up on Home button? Is there any specific way to trigger this problem to appear?
Thaank you. 🙂