w2grid advanced search does not work for checkbox and drop down list

Question

I am using w2grid with drop down list and chackbox. I have a problem with the built in advanced search. When I select a state which one of the users posses (e.g. Active), all rows are removed and nothing is displayed. Similarly, when I want to search manager: true, no record is displayed.

The configuration of the grid follows:

let config = {
    grid: {
        name: 'usersadmingrid',
        style: 'border: 1px solid #efefef',
        header: 'Users',
        show: {
          header: true,
          toolbar: true,
        },
        multiSearch: true,
        multiselect: false,
        searches: [
          { field: 'email', text: 'Email', type: 'text' },
          { field: 'stateId', text: 'State', type: 'list', options: {items: userStates}, },  
          { field: 'manager', text: 'Manager', type: 'list', options: {items: [{id: true, text: 'yes'}, {id: false, text: 'no'}]}, },
        ],  
        columns: [
          { field: 'email', text: 'Email', size: '150px', sortable: true, searchable: true, },
          { field: 'stateId', text: 'State', size: '100px', sortable: true, searchable: true,
            editable: { type: 'list', items: userStates, showAll: true, openOnFocus: true}, 
            render(record, extra) { return record.stateName; }
          },
          { field: 'manager', text: 'Manager', size: '100px', resizable: true, sortable: true , style: 'text-align: center',
            editable: { type: 'checkbox', style: 'text-align: center' }
          },
        ],
        records: users,
    }
}
    

I implemented the onChange method. When a new item is chosen from the drop down list, the record's stateId and stateName is set properly.

I use the following variables:

  let userStates = [{id: 0, text: 'Active'}, {id: 1, text: 'Inactive'}, {id: 2, text: 'External'}];
  let users = [
    {recid: 1, email: 'joe@example.com', stateId: 0, stateName: 'Active', manager: true},
    {recid: 2, email: 'john@example.com', stateId: 1, stateName: 'Inactive', manager: false},
  ];

Why the search does not return any record?

Is some cases the search window works strange. e.g. for the ceckbox iy I choose no, no text is displayed in the search textbox. What causes is strange behavior?

Please help me fix the search issues. Thank you.