UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.53 Safari/537.36

Steps to reproduce the problem:
I have an idea.
Do you see this form filler in the picture.
Well it is very hard for the user to find out how to manage it.
In fact the list just grows and grows.

One notes the right mouse button does nothing when applied to one of the items in the list.

Why not have it open a menu where one can delete an item?

What is the expected behavior?

What went wrong?
Mouse buttons wasted.
No easy way to control the list.

Did this work before? No 

Chrome version: 72.0.3626.53  Channel: n/a
OS Version: 
Flash Version: 

No it is not easy to find the way to control the list in Settings either.