Broken UI when filtering

[sonallux]

We experience UI issues when using the filtering feature on the TableVirtualScrollDataSource. When the user has scrolled to the bottom and a filter is applied, then the header of the table jumps to the bottom and no rows are visible in the table:

Steps to reproduce

• Open this Stackblitz: https://stackblitz.com/edit/vgdbdk?file=src/app/app.component.ts
• Scroll down to the bottom or near the bottom
• Type #6 in the filter input
• The header jumps to the bottom and no rows are visible
• The UI resets if the filter is removed. Trying to scroll up many times will also fix the UI.