Template.clone() stopped working in plugin

Hello) 
I was creating my plugin for Figma Design with arrows from FigJam. 
Figma Design doesn't work with figma.createConnector() (this creation method is used in FigJam plugins), but I found a way to use them via template.clone(). 
These arrows are very handy for drawing Flow directly in the design.

But today I found that the plugin gives an error and template.clone() no longer works for objects of type CONNECTOR.
Can you tell me if this is a bug or is it an intentional ban? Because it affects the usability of my work.