Hello, August,

Thank you for bringing this behaviour to our attention.

The issue is reproducible in Chrome on a touch and mouse device, however, Edge seems to work well. I believe the issue stems from the scroll and drag being simultaneously triggered which makes it very hard to group using touch at times.

I have logged an issue in our public repository that you may subscribe to watch so you can be notified when there are any new developments:

https://github.com/telerik/kendo-ui-core/issues/4911

In addition to that, I have also transferred this to our feedback portal, so people can upvote it. When an issue affects more clients, its priority raises so it goes in production quicker. Here is the new public link:

https://feedback.telerik.com/kendo-jquery-ui/1399774-kendo-grid-grouping-problem-can-t-drag-with-touchscreen

Meanwhile, I found a thread on SO that suggested using the touch-action CSS rule. 

https://stackoverflow.com/questions/16348031/disable-scrolling-when-touch-moving-certain-element/43275544#43275544

You could decorate the grid element with it and that seems to solve the issue, however, I would recommend testing if in doing so, any other functionality is impaired:


With the wrappers, this would translate to:



Finally, as a token of appreciation for helping us improve, I have added some Telerik Points to your account

Regards,
Alex Hajigeorgieva
Progress Telerik