Customer raised the issue in the suppor ticket SUPPORT-3906 and added also a video of it.
I tested it in parallels and can confirm the same behavior.
On various actions the whole tree shifts quickly down and up again. It is good viewable on the right side of the scroll bar.
The actions where it was seen:
- adding a node
- adding a property
- renaming a node inline
- renaming a property inline
It seems that it happens every time, when the tree needs to be updated for displaying the added change.
After some research it was concluded that the issue might be related to the core Vaadin functionality (see http://dev.vaadin.com/ticket/14784#ticket).
Can only confirm what is stated in the Vaadin ticket mentioned above. I tried to debug the client-side code of TreeTable but it feels like looking for a needle in a haystack and could not pinpoint any evident cause for this behaviour on Windows. Can only add that apparently MS Edge and IE11 do not show the problem.
The attached video is Chrome 57 on Windows 10. Jumping can also be reproduced on Firefox 52.