I’ve noticed lately that when I am in the panel, click around and then go ‘back’, the address bar updates but the panel/page does not. I’ve tried also with a completely fresh clone of the starterkit v3.5.3.1 and in both firefox 88.0b8 and Chrome 89.0.4389.128 - remotely and also on a local valet install.
I don’t see any errors in the console, the only way to resume navigating the site is through a hard refresh or clicking on the panel.