I run into the exact same issue as @Sebastien_Danguy. I’ve attached string variables to a lot of components (also components from our design system - in a different file) and when I copy and paste a component, the text box would be blank and I can’t see or reattach a string variable in the right side panel. Weird and really frustrating… and making the string variables unusable for my use case: being able to switch between different languages in my designs.
I have not. I just started a new file and moved on from that file. I assume it was corrupt or some corrupt component that I copied from another file, so I just cleaned house on that file.