It occurs with KendoUI 2015.2.805 but not 2014.3.1316. The error occurs on line 55569 in kendo.all.js (non-minified) in KendoUI 2015.2.805 (in the leafDataCells method).
The error causes the grid to not be rendered correctly (paging bar appears just below column headings) when it occurs. It works fine every time in Chrome and Firefox.
When I say intermittent, I really mean it - I can sit there pressing F5 and it might happen once every 10 times.
This also makes it hard to put up a JSFiddle to demonstrate the problem, as it happens much more frequently when using a local server.
If anyone has any suggestions I would greatly appreciate it. I have been struggling with this bug for a while.