angular-table | angular directive for a table | Frontend Framework library

What's the typical way to change the scrollbar style in an Angular Material table like the one below? (I don't see any styling attributes that I could use when I go to inspect the element.)

angular-table-issue

Please find code sample below link for more details

https://stackblitz.com/edit/angular-table-with-menu

I have created a dropdown menu inside table tr, I want to call some function over dropdown menus, as per expectations, each click on row should transfer rendered object through function parameter, but its always transferring the first element.

For demonstration purpose I created a rich featured Angular 8 Material table demo, that runs fine locally, but not on Stackblitz.

Stackblitz demo

The demo shows in one single table

• inline editing,
• drag and drop,
• pagination, (<- has initialization problem on Stackblitz)
• sorting and (<- has problem on Stackblitz)
• add/remove data.

As far as I can interpret the console, the error araises from the fact, that the component properties holding the sort (this._sort) and pagination (this._pagination) should be set by @ViewChild() but are still undefined even in ngAfterViewInit(){}.

Stackblitz Console

• Error: this._sort is undefined
• Error: this._paginator is undefined

Question: any idea why it works fine locally, but not on Stackblitz. Did I do a mistake and having it run locally is just by chance?