Heads up: Today’s (Feb 6, 2017) unstable update of plymouth-1:0.9.2-1 breaks the existing Manjaro plymouth themes in the Manjaro repos as well as most in AUR. The only one I tried that still works properly after updating, is the Breeze theme in AUR, probably because it’s a rather simple one.
Either the themes need to be updated to work with the new plymouth version, or plymouth-1:0.9.2-1 needs to be held back until it is fixed. Either way I don’t recommend updating to it at this time.
Edit: Let me elaborate further. The update to plymouth is affecting the timing within the themes so that the background image no longer stays in sync with the animations in the foreground. The background imgage finishes and goes offscreen while the animation is still playing in the foreground. It doesn’t look good at all. As mentioned, I tried several plymouth themes with the same result. The only one I tried that didn’t exhibit this was the breeze plymouth theme from AUR. I believe this is because it’s a very simple theme against a black background with no background image, just a black screen.
So something has changed with this plymouth update that I don’t know how to fix. Downgrading back to the older version still in testing restores the plymouth animations to their prior expected state.