"An unhandled error occurs" is not working

Hello bubble team,

I’m facing the issue while implementing the error handling.
Also I have tried elemnt error “An element has an error running a workflow” but i can see we can not select other elements like radiobutton and dropdown in that list.

This unhandled is not showing “Alet” when API hits the error.

Is there any step i’m missing on? Also i won’t get bubble’s system alert when API fails.