I have just installed OMV6 and tried to use the same 45-char length password (with special characters) that I'm used to have on my OMV5 machine.
When I change the password in the UI (from the default "openmediavault" to my desired password), I receive a success message. However, when I logout and try to login again, I get a "incorrect username/password" error.
I noticed this behaviour only occurs when I try to use this long 45-char password. If I try to use a small password, like "passwordtest@" or whatever, I can logout and login normally.
Well, maybe OMV6 has a password length limit that I'm not aware of (if so, where is this documented?). But anyways, if my password is bad, shouldn't the GUI warn me instead of giving me a success password changed message?