JS functions to write to the clipboard might not work right. (Haven’t tested them myself, I leave it to positive action from the users clipboard.)
Tested the an example JS Function to write to clipboard it’s blocked by policy. So a text area with a select all, and user doing ctrl+c or right click copy is the alternative
But theres nothing that would block right click from occuring.
So that sounds like a issue in your JS.
So trace in console for errors and issues.
Heres a live panel extension showing working right click
and a video one for good measure

