Multi custom filter save state

When using UI-grid custom filters (either the tutorial one or the ui-grid-multiselect-filter on npm ), the filters are stored in a listTerm object and in the default term object (Separated by commas).

The default grid restore tries to restore the term object which breaks the filter. If I log the state in the console I can see a filters array for each column containing 2 objects a "listTerm" array containing the selected terms and a term object containing the same values separated by commas as term :"filvalue1, filvalue2," I think grid is restoring this comma separated object and treating it as a single filter text. any ideas how to get it recognize the comma as a separator or to do this in a different way?