Cloudflare Access login not displaying for URL

I’ve configured a few Cloudflare Tunnels to enable remote access to various services on my LAN.

One of the public hostnames, however, refuses to redirect onto the Access login URL.

The public hostname is set up just like the others, it’s connected to the right local IP and port for the desired container but … unlike the others when I connect to it I simply get a blank (white) screen.

Anyone encounter something similar and resolve it successfully?

I have the same problem on two internal websites. No idea why. No solution. I tried disabling caching but that didn’t help.

300 views and no one can help‽