plymouth splash is not dismissed when LUKS device is unlocked non-interactively
When dealing with LUKS-encrytpted devices, the plymouth splash asking for the password is not dismissed if the device is unlocked non-interactively, with e.g. clevis (https://github.com/latchset/clevis/)
If one types the passphrase and press enter, plymouth changes to a "waiting" splash screen. When clevis does the unlock of the device (following [1], i.e. writing to the socket indicated by the ask.XXX file in /run/systemd/ask-password), the splash screen does not change to the waiting one, it keeps showing the prompt for the password until the boot process completes and plymouth eventually dies/disappear.
Tested in Fedora 33 beta, with plymouth-0.9.4-16.20200325gite31c81f.fc33.x86_64
.