I have a splitter pane with 3 panels. If you resize the left panels (drag it back and forth), then the right panels incrementally increases in size. Similarly with anything more than 2 panels.

https://blazorrepl.telerik.com/GpOKaRFn37OSfEyp53

Grab any of the left splitters and drag them back and forth quickly. You will see the right panels increasing in size.

The problem occurs in Google Chrome when the pane Size is set in percent.