We suggest that you try clearing storage of ZenUI Launcher and check again.
Please make sure to update to the latest firmware version WW-18.104.22.168.
If the problem still appears, please tell us your ZenUI version, and make sure whether any specific actions cause the problem to appear.
Please show us a short video or a screenshot of the problem. To share videos, please upload it to ASUS WebStorage (https://www.asuswebstorage.com/navigate/) and share the link with us.
Thank you 🙂