How attached are you to your theme?
Most people have changed themes to fix it for now. I had to change to a theme that did not come with moodle 3.2.2. I also tried one that was based on the new boost but did not come with 3.2.2 and I still got the undefined error. I had to switch to a third party theme and they went away. So if they are a problem you can try this until it is resolved.