Shopping Cart doesn't refresh after purchase with 2.3

After updating to 2.3, the cart page never refreshes after purchasing – no spinning cursor, just turns grey and stops.

Other issues too – like a bunch of new pages appearing in my menu.

Downgrading (i.e. restoring site from backup) both WooCommerce and Canvas fixed both issues.

Did I make a mistake in thinking that the Canvas 5.9.1 theme update was 2.3 compatible? I figured that since they were both from you guys, that it’d work together. Or is the shopping cart issue not theme related?

https://wordpress.org/plugins/woocommerce/