message: [hotfix] 'filter box from and to date filter #2649'
diff: @@ -196,8 +196,13 @@ export function dashboardContainer(dashboard, datasources, userid) {
  }
  if (!(col in this.filters[sliceId]) || !merge) {
  this.filters[sliceId][col] = vals;
  - } else {
  +
  + // d3.merge pass in array of arrays while some value form filter components
  + // from and to filter box require string to be process and return
  + } else if (this.filters[sliceId][col] instanceof Array) {
  this.filters[sliceId][col] = d3.merge([this.filters[sliceId][col], vals]);
  + } else {
  + this.filters[sliceId][col] = d3.merge([[this.filters[sliceId][col]], vals])[0] || '';
  }
  if (refresh) {
  this.refreshExcept(sliceId);
  