Pin webcomponent npm version numbers. Avoid unexpected version bumps.

Login to Sakai and open your browser console. Clear your browser cache. Add rubrics to a site and have a mess around with it. Try sorting some rubric criteria, using the drag handles. It all should work as expected. Add the dashboard to a Sakai site. It should all load okay. Add the assignments tool to a site. Create an assignment for grading. Submit to the assignment as a student. Grade the submission. The new grader should work fine. Try maximising and minimising a tool with the maximimise tool button in the tool header. It should all work fine.   You should not see any errors in the console.