Hi there odd one this,
Just done some printing this weekend with fresh Multigrade dev and the prints have been coming out with a very blue "tone" This happened consistently with Multigrade gloss and matt fibre paper (dilution of 1:9).
Have used this dev before and been used to the "coldish" tone in the blacks and the slight green tone on the prints which used to clear nicely in a bit of selenium - this is not a "cold" tone it is a definate blue tone to the print - excluding borders.
Mixed some fresh Bromophen (at 1:2) to compare and this was as expected; warm whites and warm black blacks - no blue, so something is with the M/g dev. Confused.