Plymouth Not Showing Image at Boot

I've been working for a while now on getting Plymouth to show a custom logo at boot. The theme is loaded properly, and most things work fine. I've hit a little snag though which I can't figure out.

When the Pi4 boots, it'll show the plymouth splash screen, except the image is missing. I can manually fix this by hitting esc twice, then the image shows just fine.

/var/log/syslog dont contain any clues as to why this is happening, same for /var/log/plymouth-debug.logwhen starting with theplymouth:debug` flag.

I'm on a Raspberry Pi model 4B 4GB running Ubuntu 20.04LTS server.

Any help would be appreciated!