Hi all!
Design tool is disappeared in Business Central Sandbox, I am using.

This user has SUPER and SUPER(DATA) in User Permission Sets.

I am not sure why this happens in my environment. Let me know how to display "Design" tool again.
The version is Version: W1 18.1 (Platform 18.0.24800.26129 + Application 18.1.24822.24906)
Thank you!