A Debian logo is visible on the right side of the screen during the boot animation :
Which hardware? Which version of plymouth? Amber or Byzantium?
You can find out which plymouth package you have with this command; dpkg -l '*plymouth*'
I ask because on my machine (Librem Mini) I don't see this.
@jeremiah.foster I am running Plymouth version 0.9.5-2pureos1. This is on a Librem 13 v3 running Byzantium.
Thinking about it, it may be an issue with the Plymouth theme itself and as I am the one who made it, I will check if I can fix that on my side. Not sure if the theme is displaying the background correctly.