I have an encrypted root partition, and on booting, it asks me for the passphrase to decrypt it. This was shown on the screen when I was using the 6.6.47 kernel, but on the 6.12.11 kernel, nothing is shown on the screen at all until I've successfully typed the passphrase and it's started booting.
Here's the armbianmonitor -u output for the working 6.6.47 kernel: https://paste.next.armbian.com/suporamoqe
And here's the output for the not-quite-so-working 6.12.11 kernel: h