Deleting custom filter manually displays empty chips

[Xunrel]

Expected Behavior

Removing the filter from the filter dialog should not display any chips

Current Behavior

Removing the filter from the filter dialog shows empty chips

Steps to Reproduce (for bugs)

https://codesandbox.io/s/muidatatables-custom-toolbar-jk556

1. Opening filter dialog (top right)
2. Deleting the age filters by using Backspace key

Possible workaround

If I return an empty array within the render function of customFilterListOptions as the fallback, it works as expected. Don't know if this was intended or not.

Tech	Version
Material-UI	3.2.2
MUI-datatables	2.14.0
React	16.4.0

[wdh2100]

@Xunrel Hello~ https://codesandbox.io/s/muidatatables-custom-toolbar-umbig

return false -> return []

render: v => {
              console.log("Render: ", v[0], v[1], this.state.ageFilterChecked);
              if (v[0] && v[1] && this.state.ageFilterChecked) {
                console.log("Min max");
                return [`Min Age: ${v[0]}`, `Max Age: ${v[1]}`];
              } else if (v[0] && v[1] && !this.state.ageFilterChecked) {
                console.log("Min max");
                return [`Min Age: ${v[0]}, Max Age: ${v[1]}`];
              } else if (v[0]) {
                console.log("Min");
                return `Min Age: ${v[0]}`;
              } else if (v[1]) {
                console.log("Max");
                return `Max Age: ${v[1]}`;
              }
              return [];
            },