invalid minified js generated for navigation.js This stops, among other things, the activation of the "Add an activity or resource" js popup links. The JS is correct for the un minified version.

this.branches[branch.get('id')] = branch;
is converted to
this.branches[s.get("id")]=s
durning minification
by changing the code to
this.branches[this.get('id')] = branch;
it is converted to
this.branches[this.get("id")]=s

https://github.com/eriko/moodle/commit/ecf5dbbf53de14ad7008e2f7385beba3746fbdee