The bug
The /advancement command is not working correctly with the wildcard (*). Trying to grant all advancements does not print any feedback at all, trying to revoke all advancements prints that "*" is not a known advancement.
How to reproduce
/advancement grant @p */advancement revoke @p *
The next snapshot will have more control over granting/revoking advancements, including an "everything" mode (but not through *, sorry!)