A REPL example to reproduce the issue is:
https://blazorrepl.telerik.com/mIuTdbuT08QWQoY319

The error is:

When the Start and End Dates are far from the DateTime.Now, Gantt freezes the entire application. 

I am trying to make the Blazor Gantt control fill a container width and height.

If I set the height of the Gantt control to 100%, it resizes to fill the container except for the tree part of the Gantt control as it stays at whatever size the window was when it first loaded.

===== ADMIN EDIT =====

Meanwhile, as a workaround, you can add a bool flag that will refresh the whole Gantt upon resizing the container. Here is an example of this approach I have prepared at the following REPL link.

You may notice a little flick with this workaround. However, you can cover it with a short loader.

1. Go to https://demos.telerik.com/blazor-ui/gantt/templates

2. Scroll to the end of the timeline horizontally

3. Move the mouse pointer to timelineTooltip appears in the wrong place

The FilterMenuType Parameter is available for GanttColumns but is is ignored.  The FilterMenuType of TelerikGantt is always used.

In the Timeline numeric editor the increase/decrease step is 0.01. However, the increase/decrease step of the Gantt Tree numeric editor is 1.  This allows you to increase the Percent Complete value to higher than 1(standing for 100%) and thus break the component.