To add to @shyamd’s comments, the magnetic moment you’re reporting for Pd is very small compared to other magnetic materials. If it’s close to the Stoner transition, it’s not only going to be more difficult to converge, but it’ll also be very sensitive to on-site Coulomb interactions. Therefore, the fact you get a different result from PBEsol for example is not at all surprising.
As a general tip, make sure you’re setting your initial magnetic moments (‘MAGMOM’ tag) to sensible values and that you’re reading your total cell magnetization rather than atom-projected magnetization too, since these can sometimes vary.
Does this mean that your result of Pd is not converged?
The question is if it’s sufficiently converged for a particular property or application. It’s possible it’s not sufficiently converged to distinguish between a small-but-non-zero magnetic moment and a zero magnetic moment, but it should be sufficiently converged for total energy and lattice constants for example.