Yay! Found it! 
We’re not escaping text in one of the places we should have been, and the framework was quite rightly refusing to display it, but incorrectly refusing to go any further. I’ve fixed it locally so should be in either 1.3 or 1.4.
For now you can adjust your metadata to work around the issue @Dulcow - you have a recently added album by Caravan Palace that contains < and > - if you rename this, or add more albums so this goes off the hub, you should be fine.
Sorry about the hassle!
