Hello,
I discovered a bug with the grid's vertical scrollbar when dealing with asynchronous read call. Indeed, if you start moving scrollbar's slider with the mouse up and down, you'll end up firing a bunch of Transport.Read requests. If those requests are treated asynchronously (like most ajax requests), the grid seems to have some problem displaying the right data.
I did create this snippet to simulate the problem. If you take a look at my print screen, you'll notice that the displayed indexes are from 42401 to 42600 out of the 250 000 records. However, you'll also notice that the slider is almost at the bottom of the slider. Based on the __count value provided to the grid, the slider position for those indexes should be somewhere near the top of the scrollbar (about 20%).
This image alone is enough to confirm a problem with the grid scrollbar. However, the real problem is not the slider position but the displayed data itself. Indeed, by releasing the slider at this position I was expecting the indexes over 230 000 to be displayed but it's not the case.
Is there a workaround to fix this?
Best regards,
Simon