SCOPE uses a control that can expand/collapse as requested. It appears in the content menu, but also for the expansion of preservation metadata.

Trying to expand the component will result in a JQuery error that can be seen in the developer tools.
Googling the issue returned that there may be a breaking change in JQuery 3.5 which is affecting this: https://stackoverflow.com/a/61177704
This seemed a good enough hypothesis to begin and so we can confirm usage of 3.5 here.
Changing this line to 3.4.1 and then (for Docker):
sudo docker-compose exec scope npm install
sudo docker-compose exec scope npm rebuild
And then refreshing my browser I get a successful outcome:

So that might be one way forward, i.e. a decent workaround. The solution may lie elsewhere though.
Thanks Radda for the advice on building NPM and helping demo this a bit quicker .