SharePoint Online Modern Search Vertical Refiners Showing Only 100 Items to Filter

Hi All,

I have created a Modern search page with Microsoft's https://microsoft-search.github.io/pnp-modern-search/. I have added the following web parts: a search box, search results, vertical refiners, horizontal refiners. 

I have nearly 10 Properties to filter in the vertical refiners. One of those property has thousands of values(Managed metadata Column values). But when I try to filter that property with any value, it only works for 100 values under that refiner. I can't set any limitation for vertical refiners. 

Here's that actual refiner. That Property Refiner only shows 100 items under it when I don't search anything.

Is it default refiners have only 100 items to filter or am I missing anything here? 

Thanks.