M.bigicon(list(M.icon = 'null.dmi'))
//the dmi has a blank icon state
//what it did was make the multiled icon become blank, but now it just keeps the bigicon on top. I didn't change anything to my old code so I have no idea why it wont go away and switch to the null icon!
Problem description:
For anyone thats familiar with Derdragons, bigicons lib.
For some reason, after I updated versions a line of code suddenly just didn't work.