Dashboard error Safari 13.0,1

In Safari 13.0,1 (just released this week) (on MacOS 10.14.6) I'm attempting to add a tile with the Attribute template. All goes well until I attempt to pick an attribute. When clicking on the down arrow nothing shows in the list and then the browser hangs. No problems with choosing the attributes in Firefox.

I can verify this problem. Hangs in Safari. OK in Chrome.