I have now upgraded two item where after master working them to max i loose one of the attributes - its almost like i ran out of space and the attribute just dropped out - this is confirmed when i compare with the existing item - it say i loose an attribute - for example - I have Flickerstep where i loose the ultimate damage attribute, and an amulet where i loose pyromancy damage - how is this possible?
Did those have the properties before masterworking?
Because there is a similar bug with some Uber boss that give incomplete items with only 3 affixes.
The items had all the attributes, one just vanished after masterworking to max
It can be the same bug. If so, Devs are working on it but for now, no patch announced