Normally when I navigate to a SE site that I am not a member of, I hide the hero banner at the top using the "Click to hide" x button at the right-hand side.
However this button doesn't seem to be working on music.SE. When I click on it, nothing happens. I've tried it on some other sites (retrocomputing is one I tried) and it's working fine.
Taking a look in the console though, when I click on the hide button, I get an error out of the
Uncaught TypeError: l.split is not a function at Object.t [as dismiss] (full-anon.en.js?v=5f531d89ce83:formatted:4556) at HTMLDivElement.<anonymous> (what-causes-harmonics-in-an-instrument:529) at HTMLDivElement.dispatch (jquery.min.js:3) at HTMLDivElement.r.handle (jquery.min.js:3)
I'm seeing this error on music.SE, but not on the other sites I've tested.
Testing this in Google Chrome 70.0.3538.110 64-bit (with all extensions disabled) on CentOS Linux release 7.5.1804