Is this a bug or a feature?

I was demonstrating the tuner to PaulG this morning and, from the remote, tried switching from FM to AM. Normally, when I do this, my sole AM preset kicks in.

Today, however, the FM station I happened to have tuned in came in as if it was am AM signal! (The circuitry was actually tuning in the FM frequency as if it was just AM.) What's more, I could toggle back and forth.

I don't see anything about this in the docs/faq, so I wanted to ask here before filing a bug report.

Of course, now I can't seem to replicate what I did before. When I rebooted the player, after that, the functionality worked as expected.

I will say that I was also demonstrating searching, moving through presets via both the player and remote buttons, and changing preset banks (A/B/C/D).

Comments welcome!